Trassanel, FR
Grotta: sviluppo 70m, profondità 24m, nel massiccio Noire (montagne) / Versant méridional de la Montagne Noire audoise, hydrosystème du Minervois-Cabardès.
Listen to the audio guide for Blanc (Trou) [C 14] Free on WIP — starts by itself when you arrive, even with the screen off