Grotte di Llimiana

Llimiana, a municipality in Pallars Jussà, brings together 9 inventoried cavities: 6 caves and 3 pits. Together they total 1005 metres of passage and reach a maximum depth of 60 metres. All the known cavities develop in limestone.

The longest cavity is the Cova dels Muricecs, with 390 metres of passage in the Terradets gorge, where the sala dels Muricecs and the Laberint are found. It is followed by the Cova Negra de Mata-solana, 250 metres in the Montsec de Rúbies, explored between 11 and 15 August 1966 and made known by the GIE del CE Gràcia, and the Forat del Gel, with 180 metres of passage and 60 metres of depth on the N slope of the Montsec de Rúbies, known since time immemorial, with archaeological remains and troglobitic fauna.

Other cavities are the Forat de la Grallera, a pit 41 metres deep with rhombohedral calcite crystals, and the Avenc Negre, a small pit 15 metres deep in the Montsec de Rubíes, explored by the GELL on 24 April 1974.