Grotte di Conca de Dalt

The municipality of Conca de Dalt, in Pallars Jussà, brings together 43 catalogued cavities: 32 caves and 11 pits. Together they total 17,155 metres of passage and reach a maximum depth of 328 metres. The lithologies present are conglomerates, in 29 cavities, and limestones, in 14.

Cova Cuberes, in Serradell, is the longest cave in Catalonia, with 13,513.15 metres of passage and 328 metres of vertical drop, excavated in conglomerates. Other cavities notable for their length are Cova de la Font Mentidora, with 810 metres of passage and 21 metres of vertical drop (+11/-10), and Font de Rivert, a spring with 321 metres of passage and 16 metres of vertical drop (+13/-3).

Among the deepest cavities are Forat de la Roqueta, a pit 71 metres deep at Boumort with an entrance 10 metres in diameter, and Avenc Barbuixell, 46 metres deep in the serra de Lleràs, with a total vertical drop of 46.5 metres and 284.8 metres of passage. Also listed are Avenc dels Raiers, 40 metres deep at the torrent de Llabró, and Espluga Sorta, with 146 metres of passage in the Serra de Lleràs, with 2 entrances and five interconnected levels.