The hidden face of Beaumont-de-Pertuis

The construction of this village seems simple, a hillock (where the old demolished castle was located until 1970) surrounded by three rings in the shape of an ellipse. But Beaumont has an important and extraordinary underground heritage, each house is built on basements from the 13th century, or before. Some of modest size were used for the preservation of cheese, but others were buried real "gothic cathedrals" (private domain, impossible to visit).