Grotte e abissi nell'unità geologica El Cabrerès

El Cabrerès, el, is a unit of the Serralada Transversal with 71 recorded cavities: 18 pits and 53 caves. The total passage is 8191 m and the maximum depth is 215 m. The lithologies present are sandstones, with 56 cavities, and limestones, with 15.

A plateau of sandstones and cliffs straddling Osona and la Selva, where erosion has opened rock shelters and cavities in the rock layers. The longest cavity is the Cova del Serrat del Vent, with 4273 m of passage in Tavertet, three well-defined morphological sections and a total elevation difference of 215.5 m (-183.6/+31.9). The Sistema de la Bora Fosca, of 1257 m and -60 m of elevation difference, is located in the municipality of Tavertet.

Other notable cavities are the Cova del Goleró, of 330 m of passage in Susqueda (la Selva), also known as Cova d'en Salvi, Carnús and Cova de l'Om; les Tunes, normally submerged in the Sau reservoir (Tavertet), with two entrances and two-storey galleries; and the Bora Gran d'en Masallera, a fissure of 166 m of passage in El Cabrerès, Santa Maria de Corcó, formed by a single fissure parallel to the cliff.