Lake Monoun

Lake Monoun is a crater lake (maar) in West Province, Cameroon, that lies in the Oku Volcanic Field. On August 15, 1984, a limnic eruption occurred at the lake, which resulted in the release of a large amount of carbon dioxide (CO2) that killed 37 people. At first, the deaths remained unexplained, and causes such as terrorism were suspected. Further investigation and a similar event two years later at Lake Nyos led to the currently accepted explanation.

Lake Monoun
A Landsat 7 satellite image
Lake Monoun
Lake Monoun
Coordinates5°35′N 10°35′E
TypeMeromictic, limnically active lake, volcanic crater lake
Basin countriesCameroon
Max. length1.6 km (0.99 mi)
Max. width0.7 km (0.43 mi)
Surface area0.31 km2 (0.12 sq mi)
Max. depth99 m (325 ft)
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