Trassanel, FR
Grotta: sviluppo 35m, profondità 12m, nel massiccio Noire (montagne) / Versant méridional de la Montagne Noire audoise, hydrosystème du Minervois-Cabardès.
Listen to the audio guide for Crâne (Aven du) [C 07] [C 7] Free on WIP — starts by itself when you arrive, even with the screen off