The Silent Killer: When an African Lake Claimed 1,700 Lives 40 Years Ago
On the evening of 21 August 1986, Lake Nyos, a seemingly tranquil crater lake in north-west Cameroon, released a deadly surge of between 100,000 and 300,000 tonnes of carbon dioxide. This dense gas cloud swept down the surrounding hillsides at nearly 50 kilometres per hour, suffocating 1,746 people and almost 3,000 head of livestock within a 25-kilometre radius. Victims died in their sleep, without a sound or a flame. While houses and vegetation remained eerily untouched, the tragedy revealed a rare and terrifying geological phenomenon to the world: the limnic eruption. How gas builds up at the bottom of a … Read more