Editing Mount Garibaldi

{{Short description|Stratovolcano in British Columbia, Canada}}
{{good article}}
{{Infobox mountain
| name = Mount Garibaldi
| other_name = '''Nch'ḵay̓'''
| photo = Mount Garibaldi West Face.jpg
| photo_caption = West face of Mount Garibaldi
| photo_alt = A snow-covered, conical mountain with two peaks rising over the foreground on a nearly clear day
| elevation_m  = 2678
| elevation_ref = <ref name="GVP">{{cite gvp|name=Garibaldi: General Information|vn=320200|archive-date=2022-01-09|access-date=2022-04-03}}</ref>
| coordinates = {{coord|49|51|01|N|123|00|17|W|type:mountain_region:CA-BC_scale:100000|format=dms|display=inline,title}}
| coordinates_ref = <ref name="KS">{{cite bcgnis|id=5329|name=Mount Garibaldi|archive-url=https://web.archive.org/web/20220109100951/https://apps.gov.bc.ca/pub/bcgnws/names/5329.html|archive-date=2022-01-09|access-date=2022-04-03}}</ref>
| length_km = 3
| length_ref = <ref name="HLK">{{cite book|editor-last1=Wood|editor-first1=Charles A.|editor-last2=Kienle|editor-first2=Jürgen|url=https://books.google.com/books?id=eyDRib-FJh4C|title=Volcanoes of North America: United States and Canada|chapter=Volcanoes of Canada|year=1990|publisher=[[Cambridge University Press]]|pages=112, 113, 114, 144, 145|isbn=0-521-43811-X}}</ref>
| width_km = 5
| width_ref = <ref name="HLK"/>
| volume_km3 = 6.5
| volume_ref = <ref name="HLK"/>
| etymology = [[Giuseppe Garibaldi]]<ref name="KS"/>
| native_name = {{native name|squ|Nch'ḵay̓}}<ref name="KS"/>
| map = Canada British Columbia
| map_caption = Location in British Columbia
| map_alt = Relief map of British Columbia pinpointing the location of Mount Garibaldi
| label_position = below
| country = [[Canada]]<ref name="HLK"/>
| region_type = [[Provinces and territories of Canada|Province]]
| region = [[British Columbia]]<ref name="HLK"/>
| district= [[New Westminster Land District]]<ref name="KS"/>
| part_type = [[Protected area|Protected&nbsp;area]]
| part = [[Garibaldi Provincial Park]]<ref name="AQW">{{cite web|title=Garibaldi Provincial Park|publisher=[[BC Parks]]|url=https://bcparks.ca/explore/parkpgs/garibaldi/|access-date=2010-06-20|url-status=live|archive-url=https://web.archive.org/web/20210716223414/https://bcparks.ca/explore/parkpgs/garibaldi/|archive-date=2021-07-16}}</ref>
| range = [[Garibaldi Ranges]]
| topo_maker = [[National Topographic System|NTS]]
| topo_map = {{Canada NTS Map Sheet|92|G|14}}<ref name="KS"/>
| period = < 260,000 years old<ref name="HLK"/>
| type = [[Stratovolcano]]<ref name="GVP"/>
| geology = [[Dacite]]<ref name="HLK"/>
| volcanic_arc/belt = [[Cascade Volcanic Arc]]<ref name="JV">{{cite book|last1=Wilson|first1=A. M.|last2=Russell|first2=J. K.|title=Field Volcanology: A Tribute to the Distinguished Career of Don Swanson|chapter=Quaternary Glaciovolcanism in the Canadian Cascade Volcanic Arc—Paleoenvironmental Implications|publisher=[[Geological Society of America]]|volume=538|year=2019|pages=134, 141|doi=10.1130/SPE538|isbn=978-0-8137-9538-6|s2cid=214521258}}</ref><br />[[Garibaldi Volcanic Belt]]<ref name="HLK"/>
| last_eruption = 8060 BCE ± 500 years<ref name="DL">{{cite gvp|name=Garibaldi: Eruptive History|vn=320200|vtab=Eruptions|archive-date=2022-01-09|access-date=2022-04-03}}</ref>
}}

'''Mount Garibaldi''' ({{langx|squ|Nch'ḵay̓}}, {{IPA|squ|n̩.ʧʼqɛˀj̰|pron}}) is a dormant [[stratovolcano]] in the [[Garibaldi Ranges]] of the [[Pacific Ranges]] in southwestern [[British Columbia]], Canada. It has a maximum elevation of {{Convert|2678|m|ft|abbr=off}} and rises above the surrounding landscape on the east side of the [[Cheakamus River]] in [[New Westminster Land District]]. In addition to the main peak, Mount Garibaldi has two named sub-peaks. [[Atwell Peak]] is a sharp, conical peak slightly higher than the more rounded peak of Dalton Dome. Both were volcanically active at different times throughout Mount Garibaldi's eruptive history. The northern and eastern flanks of Mount Garibaldi are obscured by the [[Garibaldi Névé]], a large [[snowfield]] containing several radiating [[glacier]]s. Flowing from the steep western face of Mount Garibaldi is the [[Cheekye River]], a [[tributary]] of the Cheakamus River. [[Opal Cone]] on the southeastern flank is a small [[volcanic cone]] from which a lengthy [[lava flow]] descends. The western face is a [[volcanic landslide|landslide]] feature that formed in a series of collapses between 12,800&nbsp;and 11,500&nbsp;years ago. These collapses resulted in the formation of a large [[debris flow]] deposit that fans out into the [[Squamish Valley]].

Mount Garibaldi has been the focus of intermittent volcanic activity over the last 260,000&nbsp;years. This activity produced mostly [[dacite]], the main type of [[volcanic rock]] forming Mount Garibaldi. Volcanism between 260,000 and 220,000 years ago constructed an ancestral cone that was subsequently destroyed. Another growth period began with the eruption of Atwell Peak about 13,000&nbsp;years ago when Mount Garibaldi was surrounded by an [[ice sheet]] during the [[last glacial period]]. The latest period of volcanic activity took place about 10,000&nbsp;years ago with eruptions from Dalton Dome and Opal Cone after the ice sheet retreated. Although the mountain is not known to have been volcanically active since that time, it could erupt again, which could endanger the nearby populace. If this were to happen, relief efforts could be organized by teams such as the [[Interagency Volcanic Event Notification Plan]] who are prepared to notify people threatened by volcanic eruptions in Canada.

The area surrounding Mount Garibaldi has been inhabited by [[Indigenous peoples in Canada|indigenous peoples]] for thousands of years. Their oral history includes a story of the mountain and a [[Flood myth|great flood]]. The non-indigenous name of the mountain was given by [[George Henry Richards]] in 1860 in honour of the Italian patriot and soldier [[Giuseppe Garibaldi]]. Several [[mountaineers]] had climbed Mount Garibaldi by the early 1900s, some of whom were members of mountaineering clubs. A plane operated by [[Pacific Western Airlines]] crashed on the slopes of Mount Garibaldi in 1953; all five people aboard were killed. The construction of a ski resort was begun in the late 1960s, but developments were halted in 1969 due to financial difficulties. Several [[climbing route]]s ascend the flanks of Mount Garibaldi and involve traversing glaciers, snow slopes or loose rock. [[Mountain climbing]] hazards include [[crevasse]]s, [[avalanche]]s and [[rockfall]]s. Access to Mount Garibaldi is via hiking trails from [[Alice Ridge]], Brohm Ridge, and the [[Diamond Head (British Columbia)|Diamond Head]] parking lot at the end of Garibaldi Park Road.

==Geography==
===Background===
Mount Garibaldi is located on the east side of the Cheakamus River between [[Squamish, British Columbia|Squamish]] and [[Whistler, British Columbia|Whistler]] in New Westminster Land District.<ref name="KS"/> It lies within the Pacific Ranges Ecoregion, a mountainous region of the southern [[Coast Mountains]] characterized by high, steep and rugged mountains made of [[granitic]] rocks. Much of this [[ecoregion]] encompasses the Pacific Ranges in southwestern British Columbia, although it also includes the northwesternmost portion of the [[Cascade Range]] in [[Washington state]]. Several coastal islands, [[channel (geography)|channels]] and [[fjord]]s occur along the western margin of the Pacific Ranges Ecoregion. The Pacific Ranges Ecoregion is part of the Coast and Mountains Ecoprovince which forms part of the Humid Maritime and Highlands Ecodivision.<ref name="UD">{{cite book|last1=Demarchi|first1=Dennis A.|url=https://www2.gov.bc.ca/assets/gov/environment/plants-animals-and-ecosystems/ecosystems/broad-ecosystem/an_introduction_to_the_ecoregions_of_british_columbia.pdf|archive-url=https://web.archive.org/web/20210511210316/https://www2.gov.bc.ca/assets/gov/environment/plants-animals-and-ecosystems/ecosystems/broad-ecosystem/an_introduction_to_the_ecoregions_of_british_columbia.pdf|archive-date=2021-05-11|access-date=2021-11-12|title=An Introduction to the Ecoregions of British Columbia|publisher=[[Government of British Columbia]]|year=2011|pages=24, 25, 37, 38, 39, 47, 56, 113}}</ref>

[[File:Mount Garibaldi from Squamish.jpg|thumb|left|alt=A rocky mountain with little snow at its summit overlooking hilly vegetated terrain in the foreground.|Mount Garibaldi from Squamish]]
The Pacific Ranges Ecoregion is subdivided into seven [[ecosection]]s, the Eastern Pacific Ranges Ecosection being the main ecosection at Mount Garibaldi. This ecosection is characterized by a rugged landscape of mountains that increase in elevation from south to north; the northern summits contain large [[icefield]]s. A transitional climate between coastal maritime and interior continental climates dominates the Eastern Pacific Ranges Ecosection. It is characterized by little precipitation and mild temperatures due to air from the [[Pacific Ocean]] often passing over this area. During winter, cold Arctic air invades from the Central Interior, resulting in extreme cloud cover and snow. A number of other volcanoes are situated within the Eastern Pacific Ranges Ecosection. This includes [[Mount Cayley]], which lies in the [[Squamish River]] watershed, and [[Mount Meager massif|Mount Meager]], which lies near the headwaters of the [[Lillooet River]].<ref name="UD"/>

Several rivers flow through the Eastern Pacific Ranges Ecosection, including the Fraser and [[Coquihalla River|Coquihalla]] rivers on its eastern side, the Cheakamus, Squamish and [[Elaho River|Elaho]] rivers on its western side and the Lillooet River lying in the middle. Coastal [[western hemlock]] forests dominate nearly all the valleys and lower slopes of this ecosection, the upper slopes containing [[subalpine zone|subalpine]] [[mountain hemlock]] forests and, to a lesser extent, [[Engelmann spruce]] and [[subalpine fir]] forests. Alpine vegetation lies just above the subalpine forests, which is normally overlain by barren rock.<ref name="UD"/> Wildlife such as [[grey jay]]s, [[chipmunk]]s, [[squirrel]]s, [[Northern flicker|flicker]]s,<ref name="AQW"/> [[Columbian black tailed deer]],<ref>{{cite web|url=https://bcparks.ca/news/pdfs/garibaldi_fact%20page.pdf|title=Garibaldi Provincial Park: 2010 Olympic Venue|publisher=[[BC Parks]]|page=2|year=|access-date=2022-09-24}}</ref> [[mountain goat]]s, [[wolverine]]s, [[cougar]]s and [[grizzly bear|grizzly]] and [[American black bear|black]] bears are locally present.<ref name="AQW"/> The communities of Whistler, [[Pemberton, British Columbia|Pemberton]], [[Mount Currie, British Columbia|Mount Currie]], [[Hope, British Columbia|Hope]] and [[Yale, British Columbia|Yale]] are situated within the Eastern Pacific Ranges Ecosection, all of which are connected to the [[Lower Mainland]] by a network of highways.<ref name="UD"/>

===Subfeatures===
[[File:Mount Garibaldi topographic map-en.svg|thumb|right|350px|alt=A map with contour lines depicting mountainous terrain with river valleys.|[[Topographic map]] of the Mount Garibaldi area]]
The northern and eastern flanks of Mount Garibaldi are covered by the Garibaldi Névé, the main glacial feature at the volcano.<ref>{{cite bcgnis|id=5328|name=Garibaldi Névé|archive-url=https://web.archive.org/web/20220109100916/https://apps.gov.bc.ca/pub/bcgnws/names/5328.html|archive-date=2022-01-09|access-date=2022-04-08}}</ref><ref name="LF">{{cite book|last1=Ferrigno|first1=Jane G.|last2=Williams|first2=Richard S.|title=Satellite Image Atlas of Glaciers of the World: North America|year=2002|publisher=[[United States Government Publishing Office]]|page=J296|isbn=0-607-98290-X|doi=10.3133/pp1386J|s2cid=2525336 }}</ref> Several individually named outlet glaciers drain the Garibaldi Névé.<ref name="JC">{{cite book|last1=Smoot|first1=Jeff|title=Best Climbs Cascade Volcanoes|chapter=Mount Garibaldi|publisher=[[FalconGuides]]|pages=31–44|year=2012|isbn=978-0-7627-7796-9}}</ref> These include Garibaldi Glacier northwest of Opal Cone,<ref name="JC"/><ref>{{cite bcgnis|id=5325|name=Garibaldi Glacier|access-date=2022-04-08}}</ref> North Pitt Glacier on the northeastern face of Mount Garibaldi,<ref name="JC"/><ref>{{cite bcgnis|id=17117|name=North Pitt Glacier|access-date=2022-04-08}}</ref> South Pitt Glacier southeast of [[Glacier Pikes]],<ref name="JC"/><ref>{{cite bcgnis|id=20700|name=South Pitt Glacier|access-date=2022-04-08}}</ref> Lava Glacier west of Mamquam Lake,<ref name="JC"/><ref>{{cite bcgnis|id=13098|name=Lava Glacier|access-date=2022-04-08}}</ref> Sentinel Glacier southeast of [[Garibaldi Lake]],<ref name="JC"/><ref>{{cite bcgnis|id=18857|name=Sentinel Glacier|access-date=2022-04-08}}</ref> Warren Glacier at the headwaters of Culiton Creek,<ref name="JC"/><ref>{{cite bcgnis|id=19151|name=Warren Glacier|access-date=2022-04-23}}</ref> Bishop Glacier south of the head of the Pitt River,<ref name="JC"/><ref>{{cite bcgnis|id=5121|name=Bishop Glacier|access-date=2022-08-04}}</ref> Phoenix Glacier south of [[Deception Peak]]<ref name="JC"/><ref>{{cite bcgnis|id=14192|name=Phoenix Glacier|access-date=2022-08-04}}</ref> and Pike Glacier east of Glacier Pikes.<ref name="JC"/><ref>{{cite bcgnis|id=14231|name=Pike Glacier|access-date=2022-08-04}}</ref> The Garibaldi and Lava glaciers issue from the south side of the Garibaldi Névé, sending their muddy waters to the [[Mamquam River]]. Immediately to the north of Mount Garibaldi and directly below its northern face, the Warren Glacier flows towards the Cheakamus River.<ref name="TG">{{cite book|last1=Gray|first1=W. J.|last2=Samson|first2=H.|url=https://books.google.com/books?id=vTQyAQAAMAAJ|title=The Northern Cordilleran|chapter=The Garibaldi Group|year=1913|publisher=[[British Columbia Mountaineering Club]]|pages=25, 26}}</ref> The Garibaldi Névé and its outlet glaciers have a combined area of about {{Convert|30|km2|mi2|abbr=off}}.<ref>{{cite report|last1=Denton|first1=George H.|url=https://books.google.com/books?id=5TtRAAAAMAAJ|title=Mountain Glaciers of the Northern Hemisphere|publisher=American Geophysical Society|chapter=Coast Mountains (Pacific Ranges and Cascade Mountains) and Coast Ranges of British Columbia|volume=1|page=675|year=1975}}</ref> Other glaciers on Mount Garibaldi include Cheekye Glacier south of the summit<ref name="JC"/><ref>{{cite bcgnis|id=4986|name=Cheekye Glacier|access-date=2022-08-04}}</ref> and [[Diamond Glacier (British Columbia)|Diamond Glacier]] between Atwell Peak and Diamond Head.<ref name="JC"/><ref>{{cite bcgnis|id=17298|name=Diamond Glacier|access-date=2022-08-04}}</ref> Although the glaciers at times have seen surges reaching further down slope, a 2009 study published in the ''[[Global and Planetary Change]]'' journal found that they overall have been progressively retreating since the early 1900s.<ref>{{cite journal|last1=Koch|first1=Johannes|last2=Menounos|first2=Brian|last3=Clague|first3=John J.|title=Glacier Change in Garibaldi Provincial Park, Southern Coast Mountains, British Columbia, Since the Little Ice Age|journal=[[Global and Planetary Change]]|year=2009|volume=66 |issue=3 |publisher=[[Elsevier]]|pages=161–178|doi=10.1016/j.gloplacha.2008.11.006 |bibcode=2009GPC....66..161K |issn=0921-8181}}</ref> A study conducted by the [[University of British Columbia]] in 2015 determined that 70% of all the glacial ice in Canada would be melted away by the year 2100. However, observations of the nearby Helm Glacier and other glaciers throughout Canada in 2022 suggest that the 2015 estimate may be an underestimation.<ref>{{cite news|last=Crawford|first=Tiffany|url=https://vancouversun.com/news/local-news/scientists-to-hike-b-c-s-helm-glacier-in-garibaldi-park-to-measure-glacial-melt-effects-of-climate-change|title=Scientists to Hike B.C.'s Helm Glacier in Garibaldi Park to Measure Glacial Melt, Effects of Climate Change|work=[[Vancouver Sun]]|agency=[[Postmedia Network]]|year=2022|access-date=2022-10-05}}</ref>

Mount Garibaldi contains a number of individually named peaks. Atwell Peak is a conical plug dome {{Convert|2620|m|ft|abbr=off}} in elevation.<ref name="HLK"/><ref name="JC"/><ref name="WB">{{cite gvp|name=Garibaldi: Synonyms & Subfeatures|vn=320200|vtab=Subfeatures|archive-date=2022-01-09|access-date=2022-04-03}}</ref> It is named after Atwell Duncan Francis Joseph King, an ardent mountaineer who led the [[first ascent]] of Mount Garibaldi in 1907.<ref name="KS"/> Atwell Peak contains sharp and exposed [[ridge]]s, as well as steep and loose faces that are prone to avalanching.<ref name="JC"/> Dalton Dome is a {{Convert|2633|m|ft|adj=mid|abbr=off}} blunt summit named after Arthur Tinniswood Dalton.<ref name="WB"/><ref name="DH">{{cite bcgnis|id=7564|name=Dalton Dome|archive-url=https://web.archive.org/web/20220109101016/https://apps.gov.bc.ca/pub/bcgnws/names/7564.html|archive-date=2022-01-09|access-date=2022-04-09}}</ref> Dalton was a [[Vancouver]] architect, city assessor and mountaineer who took part in the first ascent of Mount Garibaldi.<ref name="DH"/> The eastern side of Mount Garibaldi contains a peak known as The Tent.<ref>{{cite bcgnis|id=14967|name=The Tent|archive-url=https://web.archive.org/web/20210816145205/https://apps.gov.bc.ca/pub/bcgnws/names/14967.html|archive-date=2021-08-16|access-date=2022-04-09}}</ref> Opal Cone on the southeastern flank of Mount Garibaldi is a {{Convert|1740|m|ft|adj=mid|abbr=off}} [[parasitic cone]] near the south side of Garibaldi Glacier.<ref name="GVP"/><ref name="WB"/><ref>{{cite bcgnis|id=18724|name=Opal Cone|access-date=2022-04-09}}</ref> A [[Spur (topography)|spur]] known as The Sharkin separates the Warren and North Pitt glaciers on the northeast side of Mount Garibaldi.<ref>{{cite bcgnis|id=14965|name=The Sharkfin|archive-url=https://web.archive.org/web/20210815071151/https://apps.gov.bc.ca/pub/bcgnws/names/14965.html|archive-date=2021-08-15|access-date=2022-04-09}}</ref> Diamond Head is a subsidiary peak on the south side of Mount Garibaldi named for its resemblance to [[Diamond Head, Hawaii|Diamond Head]] in [[Hawaii]].<ref>{{cite bcgnis|id=17301|name=Diamond Head|archive-url=https://web.archive.org/web/20220109101017/https://apps.gov.bc.ca/pub/bcgnws/names/17301.html|archive-date=2022-01-09|access-date=2022-08-09}}</ref><ref name="HY">{{cite journal|author-link1=Bill Mathews|last1=Mathews|first1=W. H.|url=https://www.ajsonline.org/content/250/2/81.short|title=Mount Garibaldi, a Supraglacial Pleistocene Volcano in Southwestern British Columbia|journal=[[American Journal of Science]]|publisher=American Journal of Science|volume=250|issue=2|year=1952|pages=81–103|doi=10.2475/ajs.250.2.81|bibcode=1952AmJS..250...81M |doi-access=free}}</ref>

Mount Garibaldi lies within the Squamish River watershed.<ref name="UD"/> Its steep western face is the source of the Cheekye River which drains a small but steep catchment on its western flank that covers an area of {{Convert|60|km2|mi2|abbr=off}}.<ref>{{cite book|last1=Shroder|first1=John F.|last2=Davies|first2=Tim|title=Landslide Hazards, Risks, and Disasters|series=Hazards and Disasters|year=2015|publisher=[[Elsevier]]|page=338|isbn=978-0-12-396452-6}}</ref><ref>{{cite book|last1=Davies|first1=Tim R.|last2=Korup|first2=Oliver|last3=Clague|first3=John J.|title=Geomorphology and Natural Hazards: Understanding Landscape Change for Disaster Mitigation|chapter=The Scope of Geomorphology in Dealing with Natural Risks and Disasters|year=2021|publisher=[[John Wiley & Sons]]|page=498|isbn=9781119990314}}</ref> The Cheekye River flows west into the Cheakamus River which flows south and southwest into the Squamish River.<ref name="SB">{{cite bcgnis|id=4988|name=Cheekye River|access-date=2022-04-10}}</ref><ref>{{cite bcgnis|id=4978|name=Cheakamus River|archive-url=https://web.archive.org/web/20200711121315/http://apps.gov.bc.ca/pub/bcgnws/names/4978.html|archive-date=2020-07-11|access-date=2022-04-10}}</ref> Cheekye is a [[Squamish language|Squamish]] name meaning "strong rushing water".<ref name="SB"/> [[Ring Creek]] originates from the Bishop and Diamond glaciers on Mount Garibaldi.<ref name="NRC">{{cite web|url=https://atlas.gc.ca/toporama/en/index.html|title=Toporama|work=[[Atlas of Canada]]|date=12 September 2016 |publisher=[[Natural Resources Canada]]|access-date=2022-08-05}}</ref> It flows west and southwest into the Mamquam River which flows west and south into the mouth of the Squamish River.<ref>{{cite bcgnis|id=19857|name=Ring Creek|archive-url=https://web.archive.org/web/20160304094105/http://apps.gov.bc.ca/pub/bcgnws/names/19857.html|archive-date=2016-03-04|access-date=2022-04-10}}</ref><ref>{{cite bcgnis|id=4691|name=Mamquam River|archive-url=https://web.archive.org/web/20180218090318/http://apps.gov.bc.ca/pub/bcgnws/names/4691.html|archive-date=2018-02-18|access-date=2022-04-10}}</ref> Zig Zag Creek drains Lava Glacier and flows southeast into Skookum Creek.<ref>{{cite book|last1=Christie|first1=Jack|title=The Whistler Book: An All-season Outdoor Guide|year=2009|publisher=Greystone Books|page=32|isbn=978-1-55365-447-6}}</ref><ref>{{cite bcgnis|id=25934|name=Zig Zag Creek|access-date=2022-08-04}}</ref> The [[Pitt River]] also originates at Mount Garibaldi and flows southwest from the North Pitt and South Pitt glaciers into the [[Fraser River]].<ref name="NRC"/><ref>{{cite book|last1=Dashgard|first1=Shahin|last2=Ward|first2=Brent|title=Trials and Tribulations of Life on an Active Subduction Zone: Field Trips in and Around Vancouver, Canada|chapter=Holocene Human Interaction and Adaptation to Geological and Climatic Changes in the Lower Mainland, Fraser Canyon, and Coast Mountain Area of British Columbia: A Geoarchaeological View|year=2014|publisher=[[Geological Society of America]]|page=54|isbn=978-0-8137-0038-0}}</ref>

==Geology==
[[File:Mount Garibaldi3.jpg|thumb|right|alt=A prominent, rocky mountain with heavily glaciated lower slopes rising over mountainous terrain and an alpine lake.|Mount Garibaldi, Mount Price and The Table from The Black Tusk]]
Mount Garibaldi is one of the three principal volcanoes in the southern segment of the [[Garibaldi Volcanic Belt]], the other two being [[Mount Price (British Columbia)|Mount Price]] and [[The Black Tusk]].<ref name="HLK"/> It represents the largest volcano in the combined Mount Garibaldi–[[Garibaldi Lake volcanic field]], which encompasses {{Convert|26|km3|mi3|abbr=off}} of volcanic material.<ref name="KD">{{cite book|last=Hickson|first=C. J.|chapter=Character of Volcanism, Volcanic Hazards, and Risk, Northern End of the Cascade Magmatic Arc, British Columbia and Washington State|pages=239, 240|title=Geology and Geological Hazards of the Vancouver Region, Southwestern British Columbia|year=1994|publisher=[[Natural Resources Canada]]|isbn=0-660-15784-5}}</ref> This [[volcanic field]] consists of at least twelve eruptive centres that are in the form of stratovolcanoes, [[lava dome]]s, [[cinder cone]]s and [[subglacial volcano]]es.<ref name="KD"/><ref name="FC">{{cite journal|last1=Read|first1=Peter B.|year=1990|title=Late Cenozoic Volcanism in the Mount Garibaldi and Garibaldi Lake Volcanic Fields, Garibaldi Volcanic Belt, Southwestern British Columbia| journal=Articles|volume=17|issue=3|pages=171, 172, 173|publisher=[[Geological Association of Canada]]|issn=1911-4850}}</ref> These include Mount Price, The Black Tusk, [[The Table (British Columbia)|The Table]], [[Cinder Cone (British Columbia)|Cinder Cone]] and [[Round Mountain (British Columbia)|Round Mountain]], all of which formed in the last 1.3&nbsp;million years.<ref name="FC"/> The Mount Garibaldi–Garibaldi Lake volcanic field is normally separated into the Mount Garibaldi and Garibaldi Lake volcanic fields on the basis of differing [[magma]]tic chemistry.<ref name="KD"/> The Mount Garibaldi lavas are [[hypersthene]]-normative [[hawaiite]]s and [[nepheline]]-normative [[mugearite]] with subordinate [[olivine]] [[tholeiites]] whereas the Garibaldi Lake lavas are [[calc-alkaline]] [[basaltic andesite]]s through [[rhyolite]].<ref name="FC"/>

Like other volcanoes in the Garibaldi Volcanic Belt, Mount Garibaldi formed as a result of [[subduction]] zone volcanism. As the [[Juan de Fuca Plate]] thrusts under the [[North American Plate]] at the [[Cascadia subduction zone]], it forms volcanoes and volcanic eruptions.<ref>{{cite web|publisher=[[Natural Resources Canada]] |url=http://gsc.nrcan.gc.ca/volcanoes/cat/belt_garibaldi_e.php |title=Garibaldi Volcanic Belt |work=Catalogue of Canadian volcanoes |date=2009-04-02 |access-date=2011-01-21 |url-status=dead |archive-url=https://web.archive.org/web/20080615214720/http://gsc.nrcan.gc.ca/volcanoes/cat/belt_garibaldi_e.php |archive-date=June 15, 2008 }}</ref> 
===Structure===
[[File:Atwell Peak 1.jpg|thumb|right|alt=A rocky pyramid-shaped mountain peak with forested lower slopes.|Atwell Peak from the south]]
Mount Garibaldi is a moderately eroded stratovolcano overlooking the town of Squamish at the head of [[Howe Sound]] north of Vancouver.<ref name="GVP"/><ref name="HLK"/><ref>{{cite book|last1=Knight|first1=J.|last2=Harrison|first2=S.|title=Periglacial and Paraglacial Processes and Environments|publisher=[[Geological Society of London]]|year=2009|page=222|isbn=978-1-86239-281-6}}</ref> It is one of the three Cascade Arc volcanoes made exclusively of dacite, the other two being [[Glacier Peak]] and Mount Cayley. [[Rhyodacite]] is also a common volcanic rock at Mount Garibaldi and Mount Cayley, although high-[[silica]] rhyolite is uniquely present at Mount Garibaldi. Subordinate [[andesite]] erupted at all three volcanoes relatively early in their histories. At Mount Garibaldi, the total volume of volcanic rocks amount to {{Convert|16|to|20|km3|mi3|abbr=off}} and represent many episodes of activity spanning from about 670,000&nbsp;years ago to the [[Holocene]]. Andesite-dacite lavas and their [[Pyroclastic rock|pyroclastic]] accompaniments from several vents initially filled [[paleovalley]]s glacially incised into the [[Coast Plutonic Complex]] [[Basement (geology)|basement]]. Several dacitic domes and derivative pyroclastic material then built the main volcanic edifice starting about 260,000&nbsp;years ago.<ref name="FG">{{cite book|last=Hildreth|first=Wes|url=https://pubs.usgs.gov/pp/pp1744/|title=Quaternary Magmatism in the Cascades—Geologic Perspectives|publisher=[[United States Geological Survey]]|pages=7, 8, 10, 11|year=2007|isbn=978-1-4113-1945-5}}</ref> Much of the volcano was rebuilt in the last 50,000&nbsp;years by a series of violent eruptions similar in character to the [[1902 eruption of Mount Pelée]].<ref name="KE">{{cite web|last=Edwards|first=Ben|title=Mt. Garibaldi, SW British Columbia, Canada|work=VolcanoWorld|publisher=[[Oregon State University]]|year=2000|url=http://volcano.oregonstate.edu/vwdocs/volc_images/north_america/canada/Final-Gar.html|access-date=2008-05-10|url-status=dead|archive-url=https://web.archive.org/web/20100731224109/http://volcano.oregonstate.edu/vwdocs/volc_images/north_america/canada/Final-Gar.html|archive-date=2010-07-31}}</ref> The modern {{Convert|6.5|km3|mi3|adj=mid|abbr=off}} volcanic edifice is a [[Wiktionary:supraglacial|supraglacial]] volcano, having been partially constructed over glacial ice during the [[Pleistocene]] epoch.<ref name="HLK"/><ref name="HY"/>

[[File:MtGaribaldi-NorthFace-TheTable.jpg|thumb|left|alt=A prominent, glaciated mountain rising over a flat-topped, rocky mountain and a turquoise-coloured alpine lake in the foreground.|Mount Garibaldi and The Table]]
Like many other stratovolcanoes in the Cascade Volcanic Arc, Mount Garibaldi stands out by itself above the surrounding landscape. This is in contrast to most other volcanoes in the Coast Mountains, which are hidden within higher subranges.<ref name="JC"/> The mountain has a proximal relief{{efn|According to Hildreth's definitions, proximal relief refers to the difference between the summit elevation and the highest exposure of old rocks under the main edifice.<ref name="FG"/>}} of {{Convert|1300|m|ft|abbr=off}}, a draping relief{{efn|According to Hildreth's definitions, draping relief marks the difference between the summit elevation and the edifice's lowest distal lava flows (excluding pyroclastic and debris flows).<ref name="FG"/>}} of {{Convert|2375|m|ft|abbr=off}}, an elevation of {{Convert|2678|m|ft|abbr=off}} and a height of {{Convert|700|m|ft|abbr=off}}.<ref name="HLK"/><ref name="FG"/> With a length of {{Convert|3|km|mi|abbr=off}} and a width of {{Convert|5|km|mi|abbr=off}}, Mount Garibaldi is one of the larger volcanoes in the Garibaldi Volcanic Belt.<ref name="HLK"/> The western side of the mountain contains a {{Convert|600|m|ft|adj=mid|-high|abbr=off}} [[escarpment|scarp]] exposing its internal structure.<ref name="HLK"/><ref name="JV"/> This scarp formed as a result of collapse of the western flank which produced a debris flow deposit in the Squamish Valley called the [[Cheekye Fan]].<ref name="JV"/><ref name="LR">{{cite journal|last1=Fath|first1=Jared|last2=Clague|first2=John J.|last3=Friele|first3=Pierre|title=Influence of a Large Debris Flow Fan on the Late Holocene Evolution of Squamish River, Southwest British Columbia, Canada|journal=[[Canadian Journal of Earth Sciences]]|publisher=[[NRC Research Press]]|volume=55|page=333|year=2018|issue=4 |issn=1480-3313|doi=10.1139/cjes-2017-0150|bibcode=2018CaJES..55..331F |hdl=1807/82572 |hdl-access=free}}</ref> At the time of its formation, the Cheekye Fan extended across Howe Sound, resulting in the impoundment of a freshwater lake upstream of the fan. The Squamish River subsequently built a [[River delta|delta]] into this lake during the Holocene. It then filled in the lake with sediment over the last 3,300&nbsp;years to create the Squamish River [[floodplain]].<ref name="LR"/>

Mount Garibaldi is bounded by Brohm Ridge on the northwest and by Alice Ridge on the southwest.<ref>{{cite bcgnis|id=1120|name=Brohm Ridge|archive-url=https://web.archive.org/web/20220109100930/https://apps.gov.bc.ca/pub/bcgnws/names/1120.html|archive-date=2022-01-09|access-date=2022-06-18}}</ref><ref>{{cite bcgnis|id=1008|name=Alice Ridge|access-date=2022-06-18}}</ref> Extending from the southern flank of Mount Garibaldi is the unusually long Ring Creek lava flow. It is dacitic in composition, attains a length of approximately {{Convert|15|km|mi|abbr=off}} and contains well-defined levees{{efn|Levees are natural embankments that form as a result of periodic overflow of lava or as molten lava pushes cooled lava over the edge of a lava flow.<ref>{{cite web|title=Kīlauea Volcano — Lava Levees|publisher=[[United States Geological Survey]]|date=2018-07-05|url=https://www.usgs.gov/media/images/k-lauea-volcano-lava-levees|access-date=2022-08-22|url-status=live|archive-url=https://web.archive.org/web/20211025074931/https://www.usgs.gov/media/images/k-lauea-volcano-lava-levees|archive-date=2021-10-25}}</ref>}} along its margins.<ref name="KE"/> The emplacement of the Ring Creek lava flow altered drainage patterns along a valley bottom downstream, causing Skookum Creek and the Mamquam River to follow the southern margin of the lava flow and Ring Creek to follow along the northern margin. Sediments eroded from the Ring Creek lava flow form an [[alluvial fan]] at the Mamquam River and Skookum Creek confluence.<ref name="KA">{{cite journal|last1=Brooks|first1=Gregory R.|last2=Friele|first2=Pierre|title=Bracketing Ages for the Formation of the Ring Creek Lava Flow, Mount Garibaldi Volcanic Field, Southwestern British Columbia|journal=[[Canadian Journal of Earth Sciences]]|publisher=[[NRC Research Press]]|volume=29|pages=2425, 2426|year=1992|issue=11 |issn=1480-3313|doi=10.1139/e92-190|bibcode=1992CaJES..29.2425B }}</ref> The western slopes of Mount Garibaldi are underlain by [[Shear zone|sheared]] and altered [[quartz diorite]], which has undergone stream and glacial erosion to form rugged [[topography]] with relief up to {{Convert|1800|m|ft|abbr=off}}.<ref name="HLK"/>

===Volcanic history===
[[File:Atwell Peak 2.jpg|thumb|right|alt=A rocky, pyramid-shaped mountain peak towering above lightly snow-covered rocky slopes.|Atwell Peak was the source of pyroclastic flows during Mount Garibaldi's second eruptive stage about 13,000 years ago.]]
At least three stages of eruptive activity contributed to the formation of Mount Garibaldi.<ref name="KW">{{cite journal | last1=Green|first1=Nathan L.|author2=Armstrong, Richard L.|author2-link=Richard Lee Armstrong|author3=Harakal, J. E.|author4=Souther, J. G.|author4-link=Jack Souther|author5=Read, Peter B.|title=Eruptive History and K-Ar Geochronology of the Late Cenozoic Garibaldi Volcanic Belt, Southwestern British Columbia|journal=[[Geological Society of America Bulletin]]|publisher=[[Geological Society of America]]|volume=100|issue=4|page=566|year=1988|doi=10.1130/0016-7606(1988)100<0563:EHAKAG>2.3.CO;2 |bibcode=1988GSAB..100..563G |issn=0016-7606}}</ref> The initial Cheekye stage took place between 260,000&nbsp;and 220,000&nbsp;years ago with the eruption of dacite and breccia, resulting in the formation of a broad [[composite cone]].<ref name="FC"/><ref name="SL">{{cite book|last=Harris|first=Stephen L.|title=Fire Mountains of the West: The Cascade and Mono Lake Volcanoes|publisher=[[Mountain Press Publishing Company]]|year=1988|pages=283–288|isbn =0-87842-220-X}}</ref> Parts of this "proto-Garibaldi" or ancestral volcano are exposed on Mount Garibaldi's lower northern and eastern flanks and on the upper {{Convert|240|m|ft|abbr=off}} of Brohm Ridge. Around where Columnar Peak and possibly Glacier Pikes are now located, several coalescing dacitic domes were constructed.<ref name="SL"/> Dacite from the western end of Alice Ridge, from Columnar Peak and from Mount Garibaldi have [[K–Ar dating|K–Ar ages]] of 260,000 ± 160,000 years, 220,000 ± 220,000 years and 260,000 ± 130,000 years, respectively.<ref name="KW"/> During the ensuing long period of dormancy, the Cheekye River cut a deep valley into the cone's western flank which was later filled with the Fraser ice sheet.<ref name="FC"/><ref name="SL"/>

After reaching its maximum extent, the Fraser ice sheet was covered with [[volcanic ash]] and fragmented debris from the Atwell Peak stage.<ref name="KW"/><ref name="SL"/> This period of growth began about 13,000&nbsp;years ago with the eruption of the Atwell Peak plug dome from a ridge surrounded by the ice sheet.<ref name="HLK"/><ref name="SL"/> As the plug dome rose, massive sheets of broken lava crumbled as [[Scree|talus]] down its sides. Several [[pyroclastic flow]]s generated by [[Peléan eruption]]s accompanied these cooler avalanches, forming a fragmental cone with an overall slope of 12–15 degrees; erosion has since steepened this slope. Some of the glacial ice was melted by the eruptions, forming a small lake against Brohm Ridge's southern arm. The [[volcanic sandstone]]s seen today atop Brohm Ridge were created by ash settling in this lake.<ref name="SL"/>

[[File:Elfin Lakes, Opal Cone.jpg|thumb|left|alt=A forested, cone-shaped hill overshadowed by glaciated mountains rising over two pond-like lakes in the foreground.|Opal Cone, seen here behind the Elfin Lakes, was the source of an extensive dacitic lava flow late in Mount Garibaldi's eruptive history.]]
Glacial overlap was most significant on the west and somewhat to the south.<ref name="SL"/> Subsequent melting of the ice sheet and its component glaciers removed support from the western flank of Mount Garibaldi, resulting in a series of landslides between 12,800&nbsp;and 11,500&nbsp;years ago that moved nearly half of the volcano's volume into the Squamish Valley.<ref name="LR"/><ref name="SL"/><ref name="HC">{{cite web|publisher=[[Natural Resources Canada]] |url=http://gsc.nrcan.gc.ca/volcanoes/cat/feature_garibaldi_e.php |title=Garibaldi Volcanic Belt: Garibaldi Lake Volcanic Field |work=Catalogue of Canadian volcanoes |date=2009-04-01 |access-date=2022-04-09|url-status=dead |archive-url=https://web.archive.org/web/20080513070258/http://gsc.nrcan.gc.ca/volcanoes/cat/feature_garibaldi_e.php |archive-date=May 13, 2008}}</ref> This catastrophic collapse produced the {{Convert|25|km2|mi2|adj=mid|abbr=off}} Cheekye Fan and the scarp exposing the internal structure of Mount Garibaldi.<ref name="HC"/><ref>{{cite journal|last1=Friele|first1=Pierre A.|last2=Ekes|first2=C.|last3=Hickin|first3=E. J.|title=Evolution of Cheekye Fan, Squamish, British Columbia: Holocene Sedimentation and Implications for Hazard Assessment|journal=[[Canadian Journal of Earth Sciences]]|publisher=[[NRC Research Press]]|volume=36|issue=12|page=2023|year=1999|issn=1480-3313|doi=10.1139/e99-090}}</ref> Soon before or after the buried ice had melted away, the Dalton Dome stage commenced with the eruption of dacite lava down Mount Garibaldi's north and northeastern flanks.<ref name="SL"/> Another dacite flow issued from Dalton Dome shortly after the ice sheet had receded, having travelled down the landslide scarp on Mount Garibaldi's western flank.<ref name="HLK"/><ref name="SL"/> Possibly contemporaneous volcanism occurred at Opal Cone with the eruption of the voluminous Ring Creek lava flow between 10,700&nbsp;and 9,300&nbsp;years ago.<ref name="HLK"/><ref name="HC"/> This represents the latest known eruptive event at Mount Garibaldi and the volcano is now considered to be dormant.<ref name="HLK"/><ref name="KA"/><ref>{{cite journal |last1=Morison |first1=C.A.G. |last2=Hickson |first2=C.J. |date=2023 |title=Mount Garibaldi: Hazard Potential from a Long-dormant Volcanic System in the Pacific Northwest |journal=[[Canadian Journal of Earth Sciences]] |publisher=Canadian Science Publishing |volume=60 |issue=5 |pages=464–484|doi=10.1139/cjes-2022-0067 |doi-access=free |bibcode=2023CaJES..60..464M }}</ref><ref>{{cite journal|last1=Jakob|first1=M.|last2=Friele|first2=P.|title=Frequency and Magnitude of Debris Flows on Cheekye River, British Columbia|journal=[[Geomorphology (journal)|Geomorphology]]|volume=114|issue=3|pages=382–395|year=2010|publisher=[[Elsevier]]|doi=10.1016/j.geomorph.2009.08.013 |bibcode=2010Geomo.114..382J |issn=0169-555X}}</ref>

At least two debris flows in the order of {{Convert|100000|m3|ft3|abbr=off}} occurred at Mount Garibaldi in the 1930s and 1950s, both of which swept down the Cheekye River. The 1950s debris flow was caused by heavy rains and reached the Cheakamus River where it formed a {{Convert|5|m|ft|adj=mid|-high|abbr=off}} temporary [[landslide dam]].<ref name="QN">{{cite book|last1=Evans|first1=S.G.|last2=Savigny|first2=K.W.|chapter=Landslides in the Vancouver-Fraser Valley-Whistler Region|page=267|title=Geology and Geological Hazards of the Vancouver Region, Southwestern British Columbia|year=1994|publisher=[[Natural Resources Canada]]|isbn=0-660-15784-5}}</ref> This is the latest debris flow to reach the Cheakamus River from the Cheekye basin.<ref>{{cite journal|last1=Clague|first1=John J.|last2=Turner|first2=Robert J. W.|last3=Reyes|first3=Alberto V.|title=Record of Recent River Channel Instability, Cheakamus Valley, British Columbia|journal=[[Geomorphology (journal)|Geomorphology]]|page=322|year=2003|volume=53 |issue=3 |publisher=[[Elsevier]]|doi=10.1016/S0169-555X(02)00321-5 |bibcode=2003Geomo..53..317C |issn=0169-555X}}</ref> In contrast to Mount Cayley and Mount Meager, no [[hot spring]]s are known in the Garibaldi area. However, there is evidence of anomalously high heat flow in Table Meadows and elsewhere.<ref>{{cite report|last=Woodsworth|first=Glenn J.|url=https://aris.empr.gov.bc.ca/ArisReports/27299.PDF|archive-url=https://web.archive.org/web/20220109101020/https://aris.empr.gov.bc.ca/ArisReports/27299.PDF|archive-date=2022-01-09|title=Geology and Geothermal Potential of the AWA Claim Group, Squamish, British Columbia|date=April 2003|page=10|publisher=[[Government of British Columbia]]}}</ref> At least three seismic events have occurred at Mount Garibaldi since 1985, indicating that the volcano is potentially active and poses a significant hazard to the area.<ref>{{cite journal|last1=Stasiuk|first1=Mark V.|last2=Hickson|first2=Catherine J.|last3=Mulder|first3=Taimi|journal=Natural Hazards|title=The Vulnerability of Canada to Volcanic Hazards|publisher=[[Kluwer Academic Publishers]]|year=2003|page=569|volume=28|issue=2/3|doi=10.1023/A:1022954829974|bibcode=2003NatHa..28..563S |s2cid=129461798|issn=0921-030X}}</ref>

===Volcanic hazards===
[[File:Trips 03 - Brandywine - Mt Garibaldi (4435874720).jpg|thumb|right|alt=Snow-covered mountains rising over hilly vegetated terrain.|Mount Garibaldi with Mount Price and Clinker Peak in the left-centre]]
[[File:GaribaldiPP-MountGaribalidi.jpg|thumb|right|alt=A snow-covered, cone-shaped mountain overlooking snow-covered and exposed slopes.|Mount Garibaldi as seen from the north-northeast]]
Mount Garibaldi is one of two volcanoes in Canada classified as a very high threat by [[Natural Resources Canada]], the other volcano being Mount Meager {{Convert|95|km|mi|abbr=off}} to the northwest.<ref>{{cite report|last1=Wilson|first1=Alexander M.|last2=Kelman|first2=Melanie C.|title=Assessing the Relative Threats from Canadian Volcanoes|series=Geological Survey of Canada, Open File 8790|pages=32, 34, 50|publisher=[[Natural Resources Canada]]|year=2021|doi=10.4095/328950|doi-access=free}}</ref> Although [[Plinian eruption]]s have not been identified at Mount Garibaldi, Peléan eruptions can also produce large amounts of volcanic ash that could significantly affect the nearby communities of Whistler and Squamish. Peléan eruptions might cause short and long term water supply problems for the city of Vancouver and most of the Lower Mainland. The catchment area for the [[Metro Vancouver watersheds|Greater Vancouver watershed]] is downwind from Mount Garibaldi. An eruption producing floods and [[lahar]]s could destroy parts of [[British Columbia Highway 99|Highway 99]], threaten communities such as [[Brackendale, British Columbia|Brackendale]] and endanger water supplies from [[Pitt Lake]]. Fisheries on the Pitt River would also be at risk.<ref name="HC"/> Mount Garibaldi is also close to a major [[airway (aviation)|air traffic route]]; volcanic ash reduces visibility and can cause jet engine failure, as well as damage to other aircraft systems.<ref>{{cite web|url=http://gsc.nrcan.gc.ca/volcanoes/haz_e.php|title=Volcanic Hazards|work=Volcanoes of Canada|publisher=[[Natural Resources Canada]]|date=2009-04-02|access-date=2022-04-09|url-status=dead|archive-url=https://web.archive.org/web/20090202075315/http://gsc.nrcan.gc.ca/volcanoes/haz_e.php|archive-date=February 2, 2009}}</ref><ref>{{cite web|last1=Neal|first1=Christina A. |author-link1=Christina Neal |last2=Casadevall|first2=Thomas J.|last3=Miller|first3=Thomas P.|last4=Hendley II|first4=James W.|last5=Stauffer|first5=Peter H.|title=Volcanic Ash–Danger to Aircraft in the North Pacific|publisher=[[United States Geological Survey]]|date=2004-10-14|url=https://pubs.usgs.gov/fs/fs030-97/|access-date=2022-04-09|url-status=live|archive-url=https://web.archive.org/web/20210718085637/https://pubs.usgs.gov/fs/fs030-97/|archive-date=2021-07-18}}</ref> These volcanic hazards become more serious as the Lower Mainland grows in population.<ref name="HC"/>

At the head of the Cheekye River are several fractures and linear scarps that face up-slope. These features, referred to as the Cheekye linears, occur in pyroclastic rocks and interbedded andesitic and dacitic flows on the slopes of Brohm and Alice ridges. They may have formed as a result of sliding of this volcanic sequence along its [[Contact (geology)|contact]] with the underlying basement rocks.<ref name="KG">{{cite journal|last1=Clague|first1=John J.|last2=Friele|first2=Pierre|last3=Hutchinson|first3=Ian|title=Chronology and Hazards of Large Debris Flows in the Cheekye River Basin, British Columbia, Canada|journal=Environmental & Engineering Geoscience|publisher=[[Association of Environmental & Engineering Geologists]]|pages=100, 101|year=2003|volume=9|issue=2|doi=10.2113/9.2.99|bibcode=2003EEGeo...9...99C |issn=1558-9161}}</ref> As a result, the Cheekye linears pose potential landslide hazards to Brackendale and several [[Squamish Nation]] villages nearby.<ref name="KG"/><ref name="OB">{{cite web|last1=Ritchie|first1=Haley|url=https://www.vancouverisawesome.com/courier-archive/real-estate/huge-squamish-mixed-use-development-takes-next-step-3080141|title=Huge Squamish Mixed-use Development Takes Next Step|website=Vancouver Is Awesome|publisher=[[Glacier Media]]|year=2018|access-date=2022-04-14}}</ref> The danger of catastrophic landslides from Mount Garibaldi has restricted development on the Cheekye Fan.<ref name="KG"/> In 2018, a major development on the Cheekye Fan was approved by Squamish council. The project included 537&nbsp;single-family units, 678&nbsp;multi-unit dwellings and a $45 million debris flow barrier to prevent a large landslide from reaching the Cheekye Fan.<ref name="OB"/>

Because dacite is the main type of lava erupted from Mount Garibaldi, lava flows are a low to moderate hazard.<ref name="HLK"/> Dacite is [[felsic]]{{efn|Felsic pertains to magmatic rocks that are enriched with silicon, oxygen, [[aluminum]], [[sodium]] and [[potassium]].<ref name="Pinti2011">{{Citation|last=Pinti|first=Daniele|date=2011|encyclopedia=Encyclopedia of Astrobiology|page=938|publisher=[[Springer Berlin Heidelberg]]|doi=10.1007/978-3-642-11274-4_1893|isbn=978-3-642-11271-3|chapter=Mafic and Felsic}}</ref>}} in composition, containing 62–69% silica content.<ref>{{cite book|last1=Tran|first1=Trong-Hoa|last2=Polyakov|first2=Gleb V.|last3=Tran|first3=Tuan-Anh|last4=Borisenko|first4=Alexander S.|last5=Izokh|first5=Andrey E.|last6=Balkin|first6=Pavel A.|last7=Ngo|first7=Thi-Phuong|last8=Pham|first8=Thi-Dung|title=Intraplate Magmatism and Metallogeny of North Vietnam|series=Modern Approaches in Solid Earth Sciences|year=2016|publisher=[[Springer International Publishing]]|page=121|isbn=978-3-319-25233-9}}</ref><ref>{{cite web|title=Volcano Hazards Program Glossary|publisher=[[United States Geological Survey]]|url=https://www.usgs.gov/glossary/volcano-hazards-program-glossary|archive-url=https://web.archive.org/web/20220411121546/https://www.usgs.gov/glossary/volcano-hazards-program-glossary|archive-date=2022-04-11|url-status=live}}</ref> This high percentage in silica content increases the viscosity of dacitic melts relative to that of andesite or [[basalt]], generally resulting in the formation of steep-sided lava domes and stubby lava flows.<ref>{{cite web|title=Lava Flows Destroy Everything in Their Path|publisher=[[United States Geological Survey]]|url=https://www.usgs.gov/natural-hazards/volcano-hazards/lava-flows-destroy-everything-their-path|archive-url=https://web.archive.org/web/20210705104634/https://www.usgs.gov/natural-hazards/volcano-hazards/lava-flows-destroy-everything-their-path|archive-date=2021-07-05|url-status=live}}</ref><ref>{{cite book|last1=Gill|first1=Robin|title=Igneous Rocks and Process: A Practical Guide|year=2010|publisher=[[Wiley-Blackwell]]|page=169|isbn=978-0-632-06377-2|doi=}}</ref> An exception is the {{Convert|15|km|mi|adj=mid|-long|abbr=off}} Ring Creek dacite flow from Opal Cone, a length that is normally attained by basaltic lava flows.<ref name="HC"/>

===Monitoring===
Like other volcanoes in Canada, Mount Garibaldi is not [[prediction of volcanic activity|monitored]] closely enough by the [[Geological Survey of Canada]] to ascertain its activity level. The [[Canadian National Seismograph Network]] has been established to monitor earthquakes throughout Canada, but it is too far away to provide an accurate indication of activity under the mountain. It may sense an increase in seismic activity if Mount Garibaldi becomes highly restless, but this may only provide a warning for a large eruption; the system might detect activity only once the volcano has started erupting.<ref>{{cite web|url=http://gsc.nrcan.gc.ca/volcanoes/mon_e.php |title=Monitoring Volcanoes |work=Volcanoes of Canada |publisher=[[Natural Resources Canada]] |date=2009-02-26 |access-date=2022-04-09 |url-status=dead |archive-url=https://web.archive.org/web/20080608220018/http://gsc.nrcan.gc.ca/volcanoes/mon_e.php |archive-date=June 8, 2008 }}</ref> If Mount Garibaldi were to erupt, mechanisms exist to orchestrate relief efforts. The Interagency Volcanic Event Notification Plan was created to outline the notification procedure of some of the main agencies that would respond to an erupting volcano in Canada, an eruption close to the [[Canada–United States border]] or any eruption that would affect Canada.<ref>{{cite web|url=http://gsc.nrcan.gc.ca/volcanoes/ivenp_e.php |title=Interagency Volcanic Event Notification Plan (IVENP) |work=Volcanoes of Canada |publisher=[[Natural Resources Canada]] |date=2008-06-04 |access-date=2022-04-09 |url-status=dead |archive-url=https://web.archive.org/web/20090214020541/http://gsc.nrcan.gc.ca/volcanoes/ivenp_e.php |archive-date=February 14, 2009 }}</ref>

==Human history==
===Indigenous peoples===
[[File:Canada Colombie britanique ile de vancouver Victoria 29.jpg|thumb|right|alt=A multi-coloured pole with three faces and two sets of wings.|The thunderbird on top of a totem pole in [[Victoria, British Columbia]]]]
To the Squamish people, the local [[Indigenous peoples of the Pacific Northwest Coast|indigenous people]] of this area, Mount Garibaldi is called Nch'ḵay̓ ({{respell|in|ch|KAI}}). In their [[Squamish language|language]] it means "Dirty Place", referring to the muddy waters of the Cheekye River. Mount Garibaldi is considered sacred to the Squamish people as it is an important part of their [[History of the Squamish people|history]]. In their [[oral tradition|oral history]], they passed down a story of the great flood that covered their land after the last ice age.<ref name="KS"/> During the flood, Mount Garibaldi was only one of two mountains that peaked over the water.<ref name="KC">{{cite journal|last1=Reimer|first1=Rudy|year=2018|title=The Social Importance of Volcanic Peaks for the Indigenous Peoples of British Columbia|journal=Journal of Northwest Anthropology|volume=52|issue=1|pages=6, 9, 11, 13|publisher=Northwest Anthropology LLC|isbn=978-1977908285}}</ref> The Squamish people headed for Mount Garibaldi and latched their canoes to the mountain with a rope made from woven cedar bark in order to prevent being swept away.<ref name="KS"/><ref name="KC"/> As the flood waters started to recede, a large lake was formed and the Squamish people returned to their home site in Squamish.<ref name="KC"/>

Mount Garibaldi is the largest volcano in Squamish Nation territory. An [[obsidian]] outcrop on the southeastern flank of Mount Garibaldi is said by the Squamish people to have been created by the [[Thunderbird (mythology)|thunderbird]], a [[legendary creature]] in some [[Indigenous peoples of the Americas|North American indigenous peoples']] history and culture. During battles, the thunderbird helped the Squamish people fight against evil by shooting lightning from its eyes and creating powerful winds and thunder with its wings. The obsidian outcrop is where lightning from the thunderbird's eyes struck ground.<ref name="KC"/> Garibaldi obsidian was used to create tools due to its ability to form sharp edges, but its quality is poor compared to other obsidian sources in British Columbia. Pieces of Garibaldi obsidian are distributed in the [[Strait of Georgia]] where they occur in [[archaeological site]]s as early as 4,500&nbsp;years old.<ref>{{cite journal|last1=Reimer|first1=Rudy|year=2000|title=The Garibaldi Obsidian Industry at the Marpole Site (DgRs 1)|journal=The Midden|volume=32|issue=1|pages=7, 8, 9|publisher=[[Archaeological Society of British Columbia]]|issn=0047-7222}}</ref>

===Later history===
Mount Garibaldi was witnessed by George Henry Richards in 1860 while surveying Howe Sound on board the [[Royal Navy]] ship [[HMS Plumper (1848)|HMS ''Plumper'']].<ref name="AQW"/> Richards named the mountain that year after [[Giuseppe Garibaldi]], an Italian patriot and soldier who in 1860 had succeeded in unifying Italy by patriating [[Sicily]] and [[Naples]].<ref name="KS"/><ref name="AQW"/><ref>{{cite book|last1=Akrigg|first1=G. P. V.|last2= Akrigg|first2=Helen B.|title=British Columbia Place Names|publisher=[[University of British Columbia Press]]|year=1997|page=90|isbn=0-7748-0637-0}}</ref> The first ascent of Mount Garibaldi was made by Vancouver mountaineers Gordon B. Warren, Arthur Tinniswood Dalton, Tom C. Pattison, William Tinniswood Dalton, James John Trorey and Atwell Duncan King on August 11, 1907.<ref name="KS"/><ref>{{cite book|last1=Stelling|first1=Pete|last2=S. Tucker|first2=David|title=Floods, Faults, and Fire: Geological Field Trips in Washington State and Southwest British Columbia|publisher=[[Geological Society of America]]|year=2007|page=7|isbn=978-0-8137-0009-0}}</ref> This mountaineering party had recognized the volcanic origin of the mountain.<ref>{{cite journal|last1=Burwash|first1=Edward M.|year=1914|title=Pleistocene Vulcanism of the Coast Range of British Columbia|journal=[[The Journal of Geology]]|volume=22|issue=3 |page=260|publisher=[[University of Chicago Press]]|doi=10.1086/622148 |bibcode=1914JG.....22..260B |s2cid=128978632 }}</ref> Another party led by A. T. Dalton ascended the main peak and dome of Mount Garibaldi by a new and better route in 1908.<ref>{{cite news|url=https://www.newspapers.com/clip/105038263/conquered-garibaldi-after-battling-with/|title=Conquered Garibaldi After Battling With Blizzard|date=1908-08-06|newspaper=[[The Province]]|access-date=2022-07-25|page=10|via=Newspapers.com}}</ref> This was followed by an ascent to the summit in 1910 by members of the [[Alpine Club of Canada]] and a local mountaineering club. Party members included A. Morkill, B. S. Darling, A. Cawdry, W. G. Barker, A. J. Armistead and Mr. Wedgwood.<ref>{{cite news|url=https://www.newspapers.com/clip/105039256/scaled-mount-garibaldi/|title=Scaled Mount Garibaldi|date=1910-09-07|newspaper=[[The Province]]|access-date=2022-07-25|page=1|via=Newspapers.com}}</ref> A party consisting of 13&nbsp;members of the [[British Columbia Mountaineering Club]] ascended Mount Garibaldi from the southeast face on August 13, 1911.<ref>{{cite news|url=https://www.newspapers.com/clip/105410334/mount-garibaldi/|title=Mount Garibaldi|date=1911-09-16|newspaper=Saturday Sunset|access-date=2022-07-25|page=5|via=Newspapers.com}}</ref> The first women to attain the summit of Mount Garibaldi were Vancouver climbers Pansy Munday and L. C. Hanafin on July 16, 1913.<ref name="HF">{{cite news|url=https://www.newspapers.com/clip/105045510/from-province-files/|title=From Province files|date=1963-07-27|newspaper=[[The Province]]|access-date=2022-07-26|page=4|via=Newspapers.com}}</ref> They ascended the west face of Mount Garibaldi by approaching from the southwest, which involved traversing along the Mamquam River and then climbing Round Mountain and [[The Gargoyles]].<ref>{{cite book|last1=Bridge|first1=Kathryn|title=The Lives of Don and Phyllis Munday: A Passion for Mountains|publisher=Rocky Mountain Books|year=2006|page=36|isbn=978-1-894765-69-5}}</ref> Hanafin and Munday also climbed neighbouring [[Mamquam Mountain]] during the same expedition.<ref name="HF"/>

[[File:Mount Garibaldi (50997016501).jpg|thumb|left|alt=A snow-covered mountain overlooking snowy terrain with trees in the foreground.|Mount Garibaldi from the south]]
The first United States party to climb Mount Garibaldi consisted of 13&nbsp;members of [[The Mountaineers (club)|The Mountaineers]] in August 1923. It included Norman Huber of [[Saint Paul, Minnesota]]; Paul Hugdahl, Paul Gooding and C. A. Fisher of [[Bellingham, Washington]]; C. A. Garner, Amos Hard and A. H. Denman of [[Tacoma, Washington]]; [[Edmond S. Meany]], George Hise, Lars Loveseth, Ben F. Mooers, Joseph T. Hazard and Fred Fenton of [[Seattle]], Washington.<ref name="KT">{{cite news|url=https://www.newspapers.com/clip/104962131/|title=Tacomans Climb to Icy Crest of Mount Garibaldi|date=1923-08-09|newspaper=[[The Tacoma Daily Ledger]]|access-date=2022-07-04|page=2|via=Newspapers.com}}</ref> The leader of the climbing party, Joseph T. Hazard, stated that "while a little less than 9,000 feet high, Mount Garibaldi is much more difficult of ascent than any of the major peaks of Washington".<ref name="KT"/><ref>{{cite news|url=https://www.newspapers.com/clip/104969857/garibaldi-objective/|title=Garibaldi Objective: Mountaineers Will Climb Difficult Canadian Peak|date=1923-03-26|newspaper=[[The Bellingham Herald]]|access-date=2022-07-25|page=3|via=Newspapers.com}}</ref> In 1927, Mount Garibaldi was incorporated into the newly formed, {{Convert|195000|ha|acre|adj=mid|abbr=off}} [[Garibaldi Provincial Park]].<ref name="AQW"/> This mountainous Class A [[provincial park]] was named after Mount Garibaldi and contains a number of other volcanoes, including Mount Price, Cinder Cone, The Black Tusk and The Table.<ref name="AQW"/><ref>{{cite book|last1=Eyton|first1=Taryn|title=Backpacking in Southwestern British Columbia: The Essential Guide to Overnight Hiking Trips|chapter=Garibaldi Lake and Taylor Meadows|publisher=Greystone Books|year=2021|isbn=978-1-77164-669-7}}</ref> Despite being the namesake of Garibaldi Provincial Park, Mount Garibaldi is not its highest mountain.<ref name="JC"/>

On October 19, 1953, a plane operated by Pacific Western Airlines crashed on the slopes of Mount Garibaldi, killing all five people aboard. The plane was on a [[mercy flight]] from Gunn Lake to Vancouver at the time of the accident. Passengers involved in the crash were Lawrence Hamilton of the Pioneer mines, Ernest Maple of [[Gold Bridge]], nurse Lucille Warden, pilot Bob Drinkwater and stretcher passenger Joseph Neumeyer, the latter being an injured miner who was being rushed to a hospital in Vancouver. The smashed plane and deceased passengers were found by a ground search party on October 20. This was followed by removal of the passengers from the wreckage on October 21. Post-accident investigation could not determine the cause of the crash.<ref>{{cite news|url=https://www.newspapers.com/clip/105043255/bodies-of-mercy-plane-victims-found/|title=Bodies Of Mercy Plane Victims Found|date=1953-10-21|newspaper=[[McKinney Courier-Gazette]]|access-date=2022-07-25|page=8|via=Newspapers.com}}</ref>

Vancouver teachers Christopher Clifford Harris, 33, and Margo Anne Fowler, 26, got married on the summit of Mount Garibaldi on April 14, 1973, to express their passion for mountain climbing. The couple managed to get to the nearly inaccessible, {{Convert|12|x|30|m|ft|adj=mid|abbr=off}} summit by helicopter. They wore traditional mountaineering garb for their wedding. According to Harris, "You can see snow and mountain tops forever. Even Mount Baker, and that's 100 miles away."<ref>{{cite news|url=https://www.newspapers.com/clip/105045940/couple-wed-at-8700-feet/|title=Couple Wed at 8,700 feet|date=1973-04-15|newspaper=[[Vancouver Sun]]|access-date=2022-07-30|page=1|via=Newspapers.com}}</ref>

===Ski resort development===
A multi-million dollar ski resort, Mount Garibaldi Glacier Resorts, was to be built on Brohm Ridge in the late 1960s.<ref name="KL">{{cite news|url=https://www.newspapers.com/clip/105409684/luxurious-ski-resort-lies-deserted/|title=Luxurious Ski Resort Lies Deserted|date=1970-01-08|newspaper=[[Vancouver Sun]]|access-date=2022-07-26|page=1|via=Newspapers.com}}</ref><ref name="GD">{{cite news|url=https://www.newspapers.com/clip/104964014/developer-proposes-50-million-ski/|title=Developer Proposes $50-million Ski Resort for Mount Garibaldi|date=1995-11-10|newspaper=[[Vancouver Sun]]|access-date=2022-07-26|page=56|via=Newspapers.com}}</ref> It was designed by [[West Vancouver]] resident Adi Bauer in 1954 to feature a luxury lodge, three Swiss-style [[chalet]]s and the world's longest [[gondola lift]]. Access to the ski resort was to be by helicopter or snowshoes in winter, although a rough road winding up the ridge to the ski resort lodge was to provide four-wheel drive access in summer. The ski resort was to open in the winter of 1970, but financial difficulties in 1969 halted all developments. In January 1970, the three Swiss-style chalets remained unfinished, the gondola lift consisted only of towers with no lift cables, and the gondola cars were stored in another building at the foot of Mount Garibaldi.<ref name="KL"/>

In 1978, the [[Government of British Columbia]] invited California-based developer Wolfgang Richter to salvage the failed Mount Garibaldi Glacier Resorts project. Richter's plans were postponed by the [[early 1980s recession]] and his proposal was denied by the Ministry of Environment, Lands and Parks in 1991, saying it "did not make economic sense". The ski resort proposed by Richter would have operated as a day-use area and would have featured an almost {{Convert|1000|m|ft|adj=mid|-high|abbr=off}} vertical drop. Such a drop would have been greater than those of the [[Cypress Provincial Park|Cypress]], [[E. C. Manning Provincial Park|Manning]] and [[Mount Seymour Provincial Park|Mount Seymour]] provincial park ski resorts, but still {{Convert|600|m|ft|abbr=off}} shorter than the one in [[Whistler Blackcomb]]. A total of 15,000&nbsp;skiers would have been spread across {{Convert|400|ha|abbr=off}} of skiable terrain per day. Accommodation would have been provided by a mid-mountain village and an upper village at elevations of {{Convert|1100|and|1300|m|ft|abbr=off}}, respectively.<ref name="GD"/>

==Recreation facilities==
[[File:Elfin shelter.jpg|thumb|right|alt=A dark brown building surrounded by trees in the background and snow, skis and people in the foreground.|The Elfin shelter]]
Overlooking the [[Tantalus Range]] is the Brohm Ridge Chalet, a three-story European-style lodge built in the 1960s as part of the attempted ski resort development.<ref name="RH">{{cite book|last1=Anderson|first1=Sean|last2=Bryant|first2=Leslie|last3=Harris|first3=Brian|last4=Hoare|first4=Jay|last5=Hughes|first5=Colin|last6=Manyk|first6=Mike|last7=Mussio|first7=Russell|last8=Soroka|first8=Stepan|title=Vancouver, Coast & Mountains BC|publisher=Mussio Ventures|pages=135, 183|year=2019|isbn=978-1-926806-95-2}}</ref> It is now operated by the Black Tusk Snowmobile Club, a non-profit organization founded in 1971 in the community of Squamish.<ref name="RH"/><ref name="LD">{{cite web|title=About Us.|publisher=Black Tusk Snowmobile Club|url=https://www.btsc.ca/cpages/about|access-date=2022-06-08|url-status=live|archive-url=https://web.archive.org/web/20210620043023/https://www.btsc.ca/cpages/about|archive-date=2021-06-20}}</ref> The Brohm Ridge Chalet sleeps a total of 40&nbsp;people whilst the nearby Black Tusk Snowmobile Clubhouse sleeps a further&nbsp;14.<ref name="LD"/>

A [[BC Parks]] shelter at the [[Elfin Lakes]] offers overnight stays and can sleep up to 33&nbsp;people. It is equipped with a propane heater, a wash sink, pit toilet facilities, propane lights, two propane hot plates and four picnic tables. The Elfin Lakes Campground offers a day-use shelter, hang storage facilities, pit toilet facilities, two outdoor picnic tables, four indoor picnic tables and 35 tent platforms.<ref name="FK">{{cite web|title=Garibaldi Provincial Park: Diamond Head Area|publisher=[[BC Parks]]|url=https://bcparks.ca/explore/parkpgs/garibaldi/diamond.html|access-date=2022-06-13|url-status=live|archive-url=https://web.archive.org/web/20220109100909/https://bcparks.ca/explore/parkpgs/garibaldi/diamond.html|archive-date=2022-01-09}}</ref>

The Rampart Ponds Campground, located {{Convert|10|km|mi|abbr=off}} northeast of the Elfin Lakes shelter, offers food storage facilities, pit toilet facilities and 12&nbsp;tent platforms.<ref name="FK"/>

==Accessibility==
Mamquam Road, {{Convert|4|km|mi|abbr=off}} north of downtown Squamish, provides access to Mount Garibaldi from Highway 99. This easterly paved road traverses the Squamish Golf and Country Club and then heads north through [[Quest University]]. Mamquam Road then extends northeast and becomes Garibaldi Park Road.<ref name="FK"/> At the end of Garibaldi Park Road is the Diamond Head parking lot, which lies {{Convert|16|km|mi|abbr=off}} from Highway 99 at an elevation of {{Convert|914|m|ft|abbr=off}}. The {{Convert|11|km|mi|adj=mid|-long|abbr=off}} Diamond Head hiking trail commences from the parking lot to the Elfin Lakes where Opal Cone, Columnar Peak, The Gargoyles and [[Mamquam Icefield]] can be viewed.<ref name="RH"/><ref name="FK"/> A {{Convert|6.5|km|mi|adj=mid|-long|abbr=off}} hiking trail extending from the Elfin Lakes leads down to Ring Creek then climbs Opal Cone where Mamquam Lake and the Garibaldi Névé can be viewed from its summit.<ref name="FK"/> The route to the Garibaldi Névé on Mount Garibaldi's eastern flank is marked by [[cairn]]s.<ref name="JC"/>

An alternative approach to Mount Garibaldi is via Alice Ridge, which can be accessed from Highway 99 to [[Alice Lake Provincial Park]] where jeep roads [[Hairpin turn|switchback]] up onto the ridge. The [[Saddle (landform)|saddle]] dividing Diamond Head and The Gargoyles is then traversed northeasterly on a trail to the Garibaldi Névé. It is also possible to access Mount Garibaldi from Brohm Ridge. An unmarked road just before Brohm Lake and north of the Alice Lake Provincial Park turnoff extends southward from Highway 99 towards Cat Lake. About {{Convert|5|km|mi|abbr=off}} down the road is a gate that is locked at 5 p.m. on Friday evenings and not reopened until Sunday evenings. After the gate has been passed, the road heads eastward and switchbacks up the southwestern slope of Brohm Ridge. It then passes the abandoned ski area on top of the ridge before terminating. From the road's end, Brohm Ridge is hiked to the Garibaldi Névé.<ref name="JC"/>

==Climbing and skiing==
[[File:North Face of Mount Garibaldi.jpg|thumb|right|alt=A prominent, glaciated mountain overlooking a rocky peak on the left and a forested slope on the right.|Mount Garibaldi with Guard Mountain in the foreground]]
Mountain climbing on Mount Garibaldi is done in winter when the loose volcanic rocks comprising the mountain are frozen in place by snow and ice. Most climbing routes are confined to the glaciers and snow slopes, which are abundant in winter and spring. They require climbers to possess some level of climbing skill; their grades and classes range from II-to-V and 2-to-5 on the [[Yosemite Decimal System]], respectively. Ski camping on the Garibaldi Névé is common in winter, but high winds are not unusual. Therefore, most winter skiers and climbers wisely protect campsites by digging into the snow or constructing snow walls or igloos for shelter.<ref name="JC"/>

The Garibaldi Névé is a common ski destination, particularly in spring, and provides open access to many of the climbing routes. In later season, skiing across the névé is possible, but not much easier than walking. Skis are rarely used by June or July when most ascents are made. The glaciers and snow slopes of Mount Garibaldi become boggy and then normally melt away after June or July in most years. In contrast, the Garibaldi Névé provides open access to several climbing routes until late summer.<ref name="JC"/>

===Dangers and accidents===
[[Bergschrund]]s and other crevasses can pose difficulty and danger in late spring or summer when snow and ice has melted away. Rockfalls and loose rock are ever-present hazards at this time of the year; rocks regularly rumble down Mount Garibaldi's flanks without apparent provocation. For this reason, early-season, cold-weather snow ascents are recommended for most routes up Mount Garibaldi. However, at least some of these routes can have high avalanche danger in winter and spring, making rockfalls and avalanches ever-present hazards throughout the year.<ref name="JC"/>

[[File:Mount Garibaldi and The Table.jpg|thumb|left|alt=A rocky mountain with heavily glaciated lower slopes rising over a rocky ridge in the foreground.|Mount Garibaldi and The Table]]
In April 1950, Vancouver photographer Otto E. Landauer fractured a leg when a ski broke while skiing on Mount Garibaldi.<ref>{{cite news|url=https://www.newspapers.com/clip/105043649/rescue-party-saves-skier/|title=Rescue Party Saves Skier|date=1950-04-12|newspaper=[[Edmonton Bulletin]]|access-date=2022-07-13|page=6|via=Newspapers.com}}</ref><ref>{{cite news|url=https://www.newspapers.com/clip/105549522/rescuers-carry-injured-skier/|title=Rescuers Carry Injured Skier|date=1950-04-10|newspaper=[[Edmonton Journal]]|access-date=2022-07-13|page=14|via=Newspapers.com}}</ref> It was Landauer's first accident as an expert skier, having occurred as the 46-year-old neared Diamond Head Lodge. Landauer was brought down Mount Garibaldi by a party of 25&nbsp;holidayers at Diamond Head Lodge and then transferred to a light truck which took him to Squamish via logging road. The 46-hour rescue operation ended on April 11 when a speedboat waiting at Squamish brought Landauer to [[St. Paul's Hospital (Vancouver)|St. Paul's Hospital]] in Vancouver.<ref name="MD">{{cite news|url=https://www.newspapers.com/clip/105511874/the-vancouver-sun/|title=Dramatic 56-Hr. Rescue Gets Injured Skier to Hospital|date=1950-04-11|newspaper=[[Vancouver Sun]]|access-date=2022-07-13|page=1|via=Newspapers.com}}</ref>

Frank de Bruyn, a 16-year-old mountain climber from Vancouver, was killed by a small avalanche near the snow-covered summit of Mount Garibaldi on July 19, 1961. De Bruyn was one of three youths climbing Mount Garibaldi, the other two being 18-year-olds James Hebden and James Fowler. Hebden got caught in the edge of the avalanche and was sent to the Squamish General Hospital after sustaining a lung injury. Fowler escaped injury, but underwent shock treatment the next day after stumbling down the mountainside with word of the accident.<ref>{{cite news|url=https://www.newspapers.com/clip/105050235/avalanche-kills-vancouver-youth/|title=Avalanche Kills Vancouver Youth|date=1961-07-20|newspaper=[[Vancouver Sun]]|access-date=2022-07-13|page=9|via=Newspapers.com}}</ref>

Vancouver mountaineers Lloyd Williams, 26, Heinz Rostek, 22, and Don Hoover, 22, were trapped on Mount Garibaldi for four days in April 1963. The trio left the Diamond Head chalet on April 11 for a {{Convert|19|km|mi|adj=mid|-long|abbr=off}} skiing trip around Mount Garibaldi to Garibaldi Lake where they were to meet another group of skiers on April 14. They became trapped by a blizzard on the {{Convert|2300|m|ft|adj=mid|abbr=off}} level of Mount Garibaldi on April 13 where the three men set up a camp. The trio remained at the camp until April 17 when the weather cleared. Fresh ski marks left by the three mountaineers were spotted that morning by ground searchers and a [[Royal Canadian Air Force]] helicopter found the trio at noon.<ref>{{cite news|url=https://www.newspapers.com/clip/105408854/3-trapped-mountaineers-sorry-they/|title=3 Trapped Mountaineers Sorry They Caused Search|date=1963-04-18|newspaper=[[Vancouver Sun]]|access-date=2022-07-30|page=37|via=Newspapers.com}}</ref>

===Climbing routes===
====Garibaldi Peak routes====
{| class="wikitable floatright"
|+ style="text-align: center;" | Yosemite Decimal System grades and classes for Mount Garibaldi<ref name="JC"/>
|-
! Class
! Summary
|-
! 2
| Simple [[scrambling]], with the possibility of occasional use of the hands.
|-
! 3
| Scrambling with increased exposure. A rope could be carried.
|-
! 4
| Simple climbing, possibly with exposure. A rope is often used.
|-
! 5
| Technical roped free climbing; [[belaying]] is used for safety.
|-
! Grade
! Duration
|-
! II
| Less than half a day
|-
! III
| Half a day climb
|-
! IV
| Full day climb
|-
! V
| A climb lasting 2–3 days
|}

The [[normal route]] up Mount Garibaldi is the East Face Route (grade II and class 3–4). It is normally approached via Garibaldi Névé or Elfin Lakes, although it can also be approached via Alice Ridge. This route crosses the Garibaldi Névé and ascends toward the Garibaldi–Atwell saddle west of The Tent where crevasses in the [[icefall]] can sometimes make traversing difficult. There is also the danger of avalanches during ripe snow conditions. A more common and less crevassed approach is via Diamond Glacier to a saddle in the [[moraine]] ridge at the foot of Atwell Peak's southeast buttress. Once the saddle has been climbed by ascending a final steep slope, the rocky summit of Mount Garibaldi is reached by proceeding up Cheekye Glacier.<ref name="JC"/>

The Northeast Face Route (grade II and class 3–4) is a straightforward glacier ascent crossing the Warren Glacier. It ascends moderate snow and glacier slopes of the northeast face then approaches the [[headwall]] where a bergschrund is crossed with potential difficulty. Broken rock or snow is then ascended to the summit. This route is often traversed on skis by parties travelling over the Garibaldi Névé. The area below the summit [[Pinnacle (geology)|pinnacle]] is exposed to rockfall and is moderately prone to avalanching.<ref name="JC"/>

====Atwell Peak routes====
[[File:Mount Garibaldi climbing routes.jpg|thumb|right|490px|alt=A dark, lightly snowed mountain with two summits and coloured lines depicting paths by which the mountain can be climbed.|Atwell Peak and Dalton Dome climbing routes]]
Two considerably more challenging and objectively dangerous routes run up the northwest face of Atwell Peak. The first route, referred to as the Armenian Express (grade V and class 4–5), involves climbing the major [[couloir]] on the far right of the northwest face. This couloir is ascended until loose rock forces a traverse onto the south ridge just below the summit. The second route is the Siberian Express (grade V and class 4–5) and ascends the huge central couloir just north of the summit of Atwell Peak. It leads directly to the summit ridge over moderately sloping snow and ice with a very steep finish. Both the Armenian and Siberian expresses are exposed to rockfall and have high avalanche danger. For this reason, these routes are mainly climbed in winter when they are well-frozen and contain stable snow.<ref name="JC"/>

The normal route up Atwell Peak is the North Ridge Route (grade III and class 4–5). It is a straightforward ascent up the short, exposed and shattered ridge to Atwell's summit from the Garibaldi–Atwell saddle, which can be reached via the East Face Route. The north ridge is alpine in character, featuring steep slopes and very loose rock. Ascents are commonly made in winter when hazards such as avalanches and [[snow cornice]]s exist all along the ridge.<ref name="JC"/>

The South Arête Route (grade IV and class 4–5) is a technical climbing route ascending a highly exposed [[arête]] that divides the southeast and southwest faces of Atwell Peak. It leads directly to Atwell's summit, climbing steep terrain throughout its entirety. The route is generally ascended during winter when in optimal condition. Hazards include snow cornices as well as unprotected climbing on loose rock and rime ice.<ref name="JC"/>

The Southeast Face Routes (grade II and class 3–4) are approached via Alice Ridge or Elfin Lakes to Diamond Glacier. They ascend couloirs in steep shattered rock, one of which offers a direct climb to a point immediately south of Atwell's summit. The routes offer a straightforward snow and ice climb in winter when the couloirs are covered with stable snow and iced over with rocks frozen in place. Hazards include snow cornices lining the summit ridge in winter, as well as avalanches and rockfalls in less than optimal conditions.<ref name="JC"/>

====Dalton Dome routes====
At least three routes run up Mount Garibaldi to Dalton Dome, none of which are commonly climbed due to extremely poor quality rock. The most direct independent summit route to Dalton Dome is the Northwest Shoulder Route (grade II and class 4), which is approached via Brohm Ridge to the base of Mount Garibaldi's northwest shoulder. It involves climbing snow or loose rock up the shoulder to the summit ridge.<ref name="JC"/>

The Southwest Ridge Route (grade III and class 3–4) is mainly climbed in winter when conditions are favorable. It is approached via a snow or [[scree]] traverse from Brohm Ridge below the west face of Mount Garibaldi where the southwest ridge is ascended to the summit.<ref name="JC"/>

Ascending the Warren Glacier headwall on the far right side is the North Face Route (grade III and class 4–5). It climbs steep snow and remarkably unstable rock to a small [[escarpment]] that gains the northwest shoulder, which then leads to Dalton Dome's summit.<ref name="JC"/>

==See also==
{{Portal|Volcanoes|Mountains}}
*[[List of mountains of British Columbia]]
*[[List of volcanoes in Canada]]
*[[List of Cascade volcanoes]]
*[[Volcanism of Western Canada]]

==Notes==
{{notelist}}

==References==
{{reflist|30em}}

==External links==
{{Commons category|Mount Garibaldi}}
*{{cite web|publisher=[[Natural Resources Canada]] |url=http://gsc.nrcan.gc.ca/volcanoes/cat/volcano_e.php?id=gvb_gvo_013|title=Garibaldi Volcano|work=Catalogue of Canadian volcanoes|date=2009-03-10|access-date=2022-04-10|url-status=dead|archive-url=https://web.archive.org/web/20090607074411/http://gsc.nrcan.gc.ca/volcanoes/cat/volcano_e.php?id=gvb_gvo_013|archive-date=2009-06-07}}
*{{cite cgndb|id=JAJOX|title=Mount Garibaldi|access-date= 2022-04-10}}

{{Pacific Ranges}}
{{Garibaldi Volcanic Belt}}
{{Cascade volcanoes}}
{{Authority control}}

{{DEFAULTSORT:Garibaldi, Mount}}
[[Category:Religious places of the Indigenous peoples of North America]]
[[Category:Stratovolcanoes of Canada]]
[[Category:Two-thousanders of British Columbia]]
[[Category:Volcanoes of British Columbia]]
[[Category:Subduction volcanoes]]
[[Category:Sea-to-Sky Corridor]]
[[Category:Squamish people]]
[[Category:Garibaldi Ranges]]
[[Category:Sacred mountains of Canada]]
[[Category:Pleistocene stratovolcanoes]]
[[Category:Holocene stratovolcanoes]]
[[Category:Giuseppe Garibaldi]]
[[Category:Pleistocene British Columbia]]
[[Category:Holocene British Columbia]]