This lake is larger than you'd expect and has that raw edge that many French lakes lack. No neatly raked edges, but stretches of shore where the water flows freely.
Fun fact: in some places, you can still see the old engineering structures that were needed to regulate the water level.
An interesting detail: the lake was originally constructed as a water reservoir for the valley, but over the years it has become a favorite spot for birds. In the early morning, you often see herons gliding low over the water and hear the first ducks chattering before you've even finished your coffee.