Grottes de Balme
To be seen only with a guide ! From the entrance, great view on the Arve Valley. A door closes the entrance. A lot of marvellous natural sculptures can be discovered: "Salle des Cloches" or "Salle du Voile de la Mariée"...
From 06/01 to 09/01 : Only with a guide and according to weather conditions
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