Editing Mount Nyiragongo (section)

===Ongoing threat===
Localized carbon dioxide toxicity, known locally as '[[mazuku]]', has killed children even more recently. In locations where the gas seeps from the ground at relatively high levels, without the dispersing effects of wind, its effects can be deadly.<ref>{{cite web|url=https://www.pbs.org/wgbh/nova/transcripts/3215_volcanoc.html|title=Volcano Under the City|publisher=[[PBS]]|date=2005-11-01|access-date=18 August 2013 }}</ref> On 8 March 2016, Goma Volcano Observatory discovered a new vent that opened in the northeast edge of the crater, following local reports of rumblings coming from the volcano.  Some fear that this could lead to a [[Lateral eruption|flank eruption]].<ref>{{cite web|url=http://www.volcanodiscovery.com/nyiraongo/new-summit-vent/march2016/eruption-update.html|title=Nyiragongo volcano (DR Congo): fracture opens new vent inside crater – precursor of possible flank eruption?|publisher=Volcano Discovery|date=8 March 2016 }}</ref> Observers in 2020 witnessed a rise in the lava lake and other signs of an impending eruption. <ref name="Pease">{{Cite journal|last=Pease |first=Roland |date=13 October 2020 |title=Lava lake rises at dangerous African volcano |journal=[[Science (journal)|Science]] |publisher=[[American Association for the Advancement of Science]] |volume=370 |issue=6514 |pages=270–271 |doi=10.1126/science.370.6514.270 |pmid=33060337 |bibcode=2020Sci...370..270P |s2cid=222821982 |url=https://www.science.org/content/article/lava-lake-rises-dangerous-african-volcano |archive-url=https://web.archive.org/web/20201014071802/https://www.sciencemag.org/news/2020/10/lava-lake-rises-dangerous-african-volcano  |archive-date=14 October 2020 |url-status=live |url-access=subscription }}</ref>