Lake Nyos
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Lake Nyos is a crater lake in the Northwest Region of Cameroon, located about 315 km northwest of Yaoundé, the capital. Nyos is a deep lake high on the flank of an inactive volcano in the Oku volcanic
Lake Nyos in 1986
Lake and vicinity from Landsat 8, 2014
Lake Nyos as it appeared just over a week after the eruption, August 29, 1986
Cattle suffocated by carbon dioxide from Lake Nyos
Meromictic lake
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A meromictic lake is a lake which has layers of water that do not intermix. In ordinary, holomictic lakes, at least once each year, there is a physical mixing of the surface and the deep waters.
McGinnis Lake is a meromictic lake within the Petroglyphs Provincial Park.
Lac Pavin in France is a meromictic crater lake.
Strandvatnet in Nordland down to the left; only a small isthmus separates the lake from Ofotfjord.
Lac du Bourget is the largest and deepest lake in France