Lac Pavin is a

meromictic 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. The term ''meromictic'' was coined by the Austr ...

crater lake Crater Lake ( Klamath: ''Giiwas'') is a volcanic crater lake in south-central Oregon in the western United States. It is the main feature of Crater Lake National Park and is famous for its deep blue color and water clarity. The lake partly fill ...

located in the

Puy-de-Dôme Puy-de-Dôme (; oc, label=Auvergnat, lo Puèi de Doma or ''lo Puèi Domat'') is a department in the Auvergne-Rhône-Alpes region in the centre of France. In 2019, it had a population of 662,152.France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...

, between Besse-en-Chandesse and

Super-Besse Super Besse is a winter sports resort located in Massif Central, France. Geography Super Besse located in the commune of Besse-et-Saint-Anastaise (''Parc naturel régional des volcans d'Auvergne'' in the department of Puy-de-Dôme, Auvergne) ...

. It gives its name to a cheese:

Pavin cheese Pavin is a French cheese made in the Auvergne region of central France. The cheese got its name because of a nearby meromictic crater lake called Lac Pavin. It is in the same cheese family as Saint-Nectaire Saint-Nectaire is a French cheese ma ...

References

External links

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Accumulation of mantle gases in a permanently stratified volcanic lake(Lac Pavin, France)
1999 paper concluding CO2 levels in Lac Pavin were not at the time in danger of a limnic eruption
ODD TRUTHS: THE MYSTERIES OF LAKE PAVIN
blog by "The Thinker's Garden", 2017 Lakes of Puy-de-Dôme Volcanic crater lakes Meromictic lakes Chaîne des Puys Maars of France {{PuyDôme-geo-stub