Grotte della Noguera

The Noguera region contains 209 recorded cavities: 125 caves and 84 pits, with a total length of 13,739 metres and a maximum depth of 161 metres. The dominant lithologies are limestones (178), followed by conglomerates (16), gypsum (6), dolomites (5), sandstones (2), marls (1) and travertines (1).

Among the longest cavities are the Forat de l'Or, with 2,213 metres of length and 1,400 metres submerged in load, and a vertical drop of 93.5 metres; the Cova Negra de Tragó, 1,032 metres and a vertical drop of 78 metres (+52/-26); the Forat del Balconet, 631 metres of length and 161 metres of depth, discovered by the GELL in January 2007; the Cova Negra de Corçà, 325 metres and 76 metres of vertical drop, with an entrance of 4x9 metres; and the Cova Fonda de Tragó, 277 metres, explored on 2 November 1910 by Jeannel.

As for depth, the Forat del Balconet reaches 161 metres; the Querant Petit de Paús, 107 metres; the Forat del Coscoll, 103 metres; the Forat de l'Or, 93 metres; and the Querant Gran de Paús, -83 metres, with an entrance of 5 x 2 metres and a survey revised in 1980 by the GEFOMA.