Grotte di Monistrol de Montserrat

Monistrol de Montserrat, a municipality in the Bages, has 12 inventoried cavities: 9 caves and 3 pits. The group totals 328 m of passage and reaches a maximum depth of 36 m. The dominant lithology is conglomerate, present in 11 cavities, while sandstone appears in 1.

The cavity with the greatest passage is the Cova de la Dona Morta, with 104 m, a subvertical cavity 14 m deep on the South slope of the carena dels Piteus, developed in marine sandstones, with an entrance ramp, a main gallery of 41 m and a final stalagmitic formation. It is followed by the Escletxa de Sant Salvador, with 45 m, and the Mentirosa de Monistrol, with 36 m. As for depth, the Escletxa de Sant Salvador is the deepest, with 36 m, a narrow fissure in the conglomerates.

Other cavities in the municipality are the Cova de l'Os, a picturesque concavity on the lower cingle of Montserrat formed by large detached slabs, with a main hall and two galleries; the Cova de Coll Cabiró, a small cave located and explored in June 2021; the Pouetó de la Carena dels Piteus, a small ramp cavity with 7 m of drop known for many years and explored by the GES – CMB in October 1956; and the Pou de les Lluernes, a small pit 6 m deep near the path of the pla dels Ocells towards the serra de les Lluernes.