Grotte di Subirats

The municipality of Subirats, in the comarca of Alt Penedès, contains 18 catalogued cavities: 12 pits and 6 caves. Together they total 381 metres of length and reach a maximum depth of 31 metres. The predominant lithologies are limestones, present in 16 cavities, with one conglomerate and one sandstone.

Among the longest cavities are Cova Miserachs, 60 metres long at Sant Pau d'Ordal, formed by galleries along joints and a bedding plane, in an advanced state of decalcification; les Flandes dels Casots, a large fissure at els Casots accessible from both ends, with a main passage of 58.5 metres and a drop of 10 metres; and Avenc d'Esteles, 50 metres, with two entrance mouths, a 17-metre shaft and a first exploration on 13 July 1899.

As for depth, notable are Avenc d'Esteles, with 31 metres; Avenc de la Bardissa and Avenc Pastora, both 18 metres; Avenc B-2, 14 metres, located 400 metres NW of Cova Miserachs; and Avenc del Forn, 13 metres, with a round mouth, a 4-metre drop and a 9-metre shaft.