Grotte di Gallifa

Gallifa, a municipality in the Vallès Occidental, brings together 12 cavities, all catalogued as caves, with a total length of 299 m and a maximum elevation change of 6 m. The dominant lithologies are conglomerate, present in 10 cavities, while sandstone appears in 2.

The longest cavity is the Cova de l'Endal, with 80 m of length, near Sant Sadurní de Gallifa, on the N slope of the hill where the hermitage is located. It is followed by the Cova Central, at 54 m, at the Coll d'Ases, formed by a network of parallel and perpendicular joints with an elevation change of +6.5 m; the Avenc de la Caseta dels Plans, at 44 m, known since ancient times and used as a refuge during the civil war; the Cova de la Columna, at 30 m, also at the Coll d'Ases; and the Cova dels Maquis, at 20 m, of archaeological interest, occupied from the Neolithic until the 17th century.

Among the deepest cavities are the Avenc de la Caseta dels Plans and the Balma de les Falgueres, both with 6 m; the Balma de les Falgueres was located by the SIS del CE Terrassa after the 2003 fire and surveyed by Jordi Guillemot in November 2005. Also notable are the Cova Central, with 6 m, and the Cova de l'Endal, with 5 m.