Caves and potholes in Mura

Mura, in the Bages, spreads across the slopes of Sant Llorenç del Munt and the serra de l’Obac, the conglomerate massif that gives its name to the natural park it shares with the Vallès Occidental. This lithology, unusual for karst, generates cavities of a particular morphology here, catalogued in a notable number for a municipality of such small size.