A limnic eruption occurs when a lake releases massive amounts of dissolved carbon dioxide gas, which is heavier than air and flows down valleys like an invisible river, displacing oxygen and causing mass suffocation; the 1986 Lake Nyos disaster in Cameroon exemplified this phenomenon when over 100,000 tons of CO2 killed 1,700 people in their sleep.
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The Invisible Killer Cloud of the Lake Nyos DisasterAdded:
In 1986, a calm lake in Cameroon became a weapon of mass destruction. A limnic eruption at the bottom of Lake Nyos released over 100,000 tons of compressed carbon dioxide. The gas, heavier [music] than air, poured down the mountain like a silent invisible river at 60 miles per hour. As the villagers slept, the dense cloud suffocated all the oxygen in its path. 1,700 people died without ever waking up, enveloped by the relentless physics of a lethal invisible ocean.
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