Lake Nyos Suffocates 1,746 People With Carbon Dioxide
Lake Nyos, Northwest Region, Cameroon
CONFIRMED89% CONFIDENCEThe source[1] opens with the date and the toll: "On 21 August 1986, a limnic eruption at Lake Nyos in northwestern Cameroon killed 1,746 people and 3,500 livestock." No hour is given, so the pin is all-day.
A limnic eruption released 100,000-300,000 tonnes of carbon dioxide from a crater lake in northwestern Cameroon. Heavier than air, the cloud rolled downhill and suffocated everyone and everything within 25 km.
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