Grotte di Torrelles de Llobregat

Torrelles de Llobregat, a municipality in the Baix Llobregat, contains 6 cavities, all of them catalogued as caves. Together they total 99 metres in length and reach a maximum depth of 6 metres. The cavities develop in Conglomerate (5) and Sandstone (1).

The longest cavity is Coves Nº2-3 de Can Mas, at 35 metres, which is also the deepest, at 6 metres. It is followed by Cova Nº1 de Can Mas, at 20 metres and 5 metres deep, and Cova Nº4 de Can Mas, at 14 metres and 5 metres deep; the latter includes a rock shelter 12 metres wide and passages of 9 and 5 metres. The group is completed by Foradada Nº3 de la Serra de Can Valent, at 13 metres and 5 metres deep, and Foradada Nº2 de la Serra de Can Valent, at 9 metres.

Among the cavities are also Foradada Nº1 de la Serra de Can Valent, a small chamber with two openings —la Foradada nº 1 and nº 2— with alveolar forms of aeolian erosion, and Cova Nº4 de Can Mas, with curious erosion forms. Several cavities present erosion forms excavated in the red sandstones of the buntsandstein (Triassic).