description Lac Pavin Overview
Lac Pavin is a deep crater lake located in the volcanic Auvergne region of central France. It was formed within a maar and tuff cone, representing one of the youngest volcanic formations in the country. The lake is scientifically notable for being meromictic, meaning its water layers do not mix, which creates anoxic conditions devoid of oxygen in its deeper zones. It serves as an important site for researchers studying volcanic lakes, limnology, and microbial life in extreme environments.
help Lac Pavin FAQ
What type of volcanic feature is Lac Pavin?
Lac Pavin is a maar lake, meaning it formed from a volcanic explosion rather than from a conventional lava cone. The crater is in the Auvergne region of central France.
Why is Lac Pavin called a meromictic lake?
Its deep lower water layer does not fully mix with the upper layer during the year. This creates distinct chemical conditions at depth and allows gases and dissolved materials to accumulate below the mixing zone.
How deep is Lac Pavin?
Lac Pavin is roughly 90 metres deep, making it one of the deepest lakes in France. Its steep crater walls and nearly circular shape reflect its volcanic origin.
Where can I find Lac Pavin?
The lake is near the town of Besse-et-Saint-Anastaise in the Puy-de-Dôme department. It is part of the volcanic landscape of the Massif Central and can be reached by road and walking trails.
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