Grotte di Baix Pallars

The municipality of Baix Pallars, in Pallars Sobirà, contains 41 registered cavities: 25 pits and 16 caves. Together they total 2242 metres of length and reach a maximum depth of 68 metres. The dominant lithologies are limestones (33 cavities), followed by conglomerates (6) and gypsum (2).

Among the longest cavities are Avenc M-1, with 310 metres of length, Avenc M-35, with 160 metres, Forat de la Querata, with 150 metres, Avenc M-7, with 130 metres, and Cova M-22, with 118 metres. As for depth, Avenc M-35 stands out, with 68 metres, Forat de la Querata, with 51 metres, Avenc del Jabalí, with 44 metres, Avenc M-7, with 43 metres, and Avenc L.85.3, with 38 metres.

Several cavities are located in Montcortès, such as Avenc M-1, Avenc M-35, Avenc M-7 and Cova M-22, while Forat de la Querata, Avenc del Jabalí and Avenc L.85.3 are located in Boumort. Avenc M-35 has been known since 1981 and was surveyed on 30 October 1988; Forat de la Querata was explored by the SIE del CEA in 1969; Avenc M-7 was explored in 1983 and surveyed in 1989; Avenc del Jabalí was discovered by a hunter and explored for the first time in June 1985; and Avenc L.85.3 was explored for the first time on 4 August 1985.