Caves and potholes in Rellinars

Rellinars, in the Vallès Occidental, extends across the wooded slopes rising towards the massif of Sant Llorenç del Munt i l’Obac, one of the comarca’s best-known protected natural areas. Its municipal area, small and very sparsely populated, combines ravines and ridges of conglomerate and limestone. This steep relief, typical of the serralada prelitoral, contains cavities that form part of the massif’s speleological catalogue.