Editing Mount Akagi (section)

{{Short description|Mountain in Japan}}
{{Infobox mountain
| name = Mount Akagi
| other_name = 赤城山
| photo = MountAkagi.jpg
| photo_caption = Viewed from the southeast. In the foreground are parts of the cities of [[Kiryu, Gunma|Kiryu]] and [[Midori, Gunma|Midori]].
| elevation_m = 1828
| elevation_ref = <ref name=gvp>{{cite gvp|vn=283130|name=Akagisan|access-date=2010-03-19}}</ref>
| prominence = 
| prominence_ref = 
| range = 
| parent_peak =
| listing = {{ubl|[[List of volcanoes in Japan|Volcanoes of Japan]]|[[List of mountains in Japan|Mountains of Japan]]}}
| region_type = Prefecture | region  = [[Gunma Prefecture|Gunma]]
| country = [[Japan]]
| map = Japan
| map_size = 280
| label_position = right
| translation = Red Castle Mountain
| language = [[Japanese language|Japanese]]
| coordinates = {{Coord|36|33|26|N|139|11|47|E|type:mountain_region:JP-10_scale:100000|format=dms|display=inline,title}}
| coordinates_ref = <ref name=gvp/>
| topo = 
| type = [[Stratovolcano]]
| age = 
| last_eruption = Possibly 1251<ref name=gvp/>
| first_ascent = 
| easiest_route = 
}}
[[File:Mount Akagi Relief Map, SRTM-1.jpg|thumb|Relief Map of Akagi Volcano]]

{{Nihongo|'''Mount Akagi'''|赤城山|Akagi-yama|Red Castle}} is a stratovolcano in [[Gunma Prefecture]], [[Japan]].

The broad, low dominantly [[andesite|andesitic]] [[stratovolcano]] rises above the northern end of the Kanto Plain. It contains an elliptical, {{Convert|3|x|4|km|mi|abbr=on}} summit [[caldera]] with post-caldera [[lava dome]]s arranged along a NW–SE line. Lake Ono is located at the NE end of the caldera. An older stratovolcano was partially destroyed by edifice collapse, producing a debris-avalanche deposit along the south flank. A series of large [[plinian eruption]]s accompanied growth of a second stratovolcano during the [[Pleistocene]]. Construction of the central cone in the late-Pleistocene summit caldera began following the last of the plinian eruptions about 31,000 years ago. During historical time unusual activity was recorded on several occasions during the 9th century, but reported eruptions in 1251 and 1938 are considered uncertain.<ref name=gvp/>

Mount Akagi, along with [[Mount Myōgi]] and [[Mount Haruna]], is one of the {{Nihongo|"Three Mountains of Jōmō"|上毛三山}}, and the cold north winds which blow down from it are called {{Nihongo||赤城おろし|Akagi-oroshi}} or {{Nihongo||空っ風|Karakkaze}}.

The [[Amagi-class battlecruiser|''Amagi''-class battlecruiser]] {{ship|Japanese aircraft carrier|Akagi||2}}, converted into an aircraft carrier during construction, was named after Mount Akagi and was the flagship for the strike force commanded by Vice Admiral [[Chuichi Nagumo]] in the [[attack on Pearl Harbor]]. The carrier was later sunk in the [[Battle of Midway]].