Grand Lac, Glacial lake in Clairvaux-les-Lacs, France.
Grand Lac is a glacial lake in the Jura region with clear waters and gentle shorelines surrounded by forests. The waters are fed by the Augeon River and offer swimming, fishing, and boating opportunities.
The lake has been inhabited since prehistoric times, with evidence from tools and settlement remains over 6000 years old. These archaeological sites were recognized as UNESCO World Heritage sites, documenting early human settlement in the region.
The location features a permanent exhibition detailing the daily life of Neolithic farmers who lived by the lake 6000 years ago.
The lake is surrounded by three campgrounds that provide direct access to water and recreational activities. The infrastructure around the shoreline makes it easy to use the lake for day trips or longer stays.
The lake's water is constantly renewed and circulates through the Augeon river system about every three months. This continuous renewal keeps the water quality high and contributes to the clear, clean water visitors find today.
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