Saint-Thibaud-de-Couz, FR
Grotta: sviluppo 20m, profondità 20m, nel massiccio Chartreuse (massif de la) / Épine (chaîne de l').
Listen to the audio guide for Grand Trou (Le) [n°014] [n°14] Free on WIP — starts by itself when you arrive, even with the screen off