Grotte di Tavertet

Tavertet, a municipality in Osona, has 35 recorded cavities: 34 caves and 1 pit. Together they total 6528 m of passage and reach a maximum depth of 215 m. The lithologies present are sandstone, in 33 cases, and limestone, in 2.

Cova del Serrat del Vent is the longest and deepest cavity in the municipality, with 4273 m of passage and a total elevation difference of 215.5 m (-183.6/+31.9). Sistema de la Bora Fosca (Bora Fosca + Bora del Medalló) follows with 1257 m and an elevation difference of -60 m; it is a cavity known for a very long time, with numerous bibliographic references and scientific research. Other notable cavities are les Tunes, at 324 m, normally submerged in the Sau reservoir, with two entrances and two-storey galleries; Bora dels Teixidors, at 97 m, known since long ago and explored speleologically in 1976; and Cova de Can Feló, at 85 m, located on the limestone cliff, with an entrance of 10 by 5 metres and galleries running NE and S.

Among the deepest cavities are Balmes de Balà, with 82 m of passage and 18 m of depth, with two entrances and galleries almost parallel to the riera de Balà; Cort Fosca de Villaret, with 72 m of passage and 16 m of depth, which crosses an inclined rock face on two levels; and Balma de les Corts, 12 m deep, a large rock shelter with a waterfall and remains of dry-stone walls from the old livestock pens.