Les grottes et avens, le monde souterrain des Grands Causses
There is no river running on the Grands Causses territories because of the permeable limestone soil wich lets rainwater seep. However, nature sometimes reserves us many surprises, and in the bowels of the earth water secretly models extraordinary forms: this is the territory of the caves and "aven". Some have been adapted to welcome the public: come and marvel at the masterpieces of nature such as Aven Armand, the Dargilan Cave or the Abyss of Bramabiau!
