Nobody Knows Why Lake Nyos Keeps Killing: The Lake's Dark Secret #Shorts

Added: 2026-05-16

[00:00:00]On August 21st, 1986, a quiet lake in northwestern Cameroon released an invisible cloud that killed 1,746 people in their sleep. Lake Nyos sits inside a volcanic crater, and its deep waters had been silently absorbing CO2 from magma below for centuries.

[00:00:21]That night, something triggered the lake to overturn, and 80 million cubic meters of CO2 rolled down the valley at 60 mph, displacing all the oxygen for 16 miles.

[00:00:34]Engineers installed degassing pipes in 2001 to vent the gas slowly, but the lake is still saturated, and the natural rock dam holding it back is crumbling.

[00:00:45]If that dam fails, 50 million cubic meters of water will flood Nigeria, and the pressure drop will release every molecule of trapped CO2 at once.