QR Veyre-Monton – Bourg 15
A tiered habitat
Up to four floors of caves were superimposed in some places. Ceiling heights generally varied from 1.7 to 2.8m and the thickness of the rock floor separating the different levels was over 40cm.
Few caves had interior staircases or ladders. To get from one level to another, you had to use paths, ramps or external staircases made of arkose. Anchored to the rock, the masonry façades took over parts of the natural façades. Arranged along narrow paths, they often extended upwards, acting as a retaining wall for the path above, sometimes lining the natural wall.
The collapse of a section of cliff led to the partial destruction of façades and caves, which are now wide open.