Grotte della Bages

Bages is a comarca with 177 registered cavities, including 125 caves and 52 pits. Together they have a total surveyed length of 9,634 m and a maximum depth of 187 m. The predominant lithology is conglomerate, present in 147 cavities, followed by sandstone, with 25, and salt, with 3; there is also one cavity in limestone and one in travertine.

The longest cavity is Cova dels Meandres de Sal, at 4,300 m; it is also the deepest, at 187 m. Other notable cavities by length are Forat Micó, at 640 m; Cova-avenc del Picarol, at 340 m; Avenc de l'Espluga, at 320 m; and Avenc del Llest, at 265 m. By depth, after Cova dels Meandres de Sal come Avenc de l'Espluga, at 123 m; Avenc del Llest, at 56 m; and Avenc de la Brega and Avenc de Sant Jaume de la Mata, both at 52 m.

Several of these cavities are in the Serra de l'Obac, including Cova-avenc del Picarol, Avenc de l'Espluga, Avenc del Llest, Avenc de la Brega and Avenc de Sant Jaume de la Mata. Cova dels Meandres de Sal and Forat Micó are located in Cardona.