Search for the hidden cave

The karstic massif of the Roc de Chère shape looks just like a big slice of Swiss cheese, due to the breakdown of the rock by the circulating water. As a result, it is riddled with a plethora of caves, most of which are adjacent with the lake.
The largest is the Grand Pertuis (see photo), which means "fissure", a narrow passage between the rocks. This cave is only accessible from the lake.

Please stay on the trails to respect the biodiversity of this fragile environment.