Saint-Thibaud-de-Couz, FR
Grotta: sviluppo 12m, profondità 1m, nel massiccio Chartreuse (massif de la) / Épine (chaîne de l').
Listen to the audio guide for Source (Regard supérieur) [n°071.1] [n°71.1] Free on WIP — starts by itself when you arrive, even with the screen off