Opis:
In the foot steps of Pierre Chevalier, Fernand Petzl and Charles Petit-Didier, the main explorers of the Système du Dent de Crolles.
We visited just a small part of the System: a roundtrip from the entrance of the Trou du Glaz, Puits de la Lanterne, Puits de l'Ogive, Réseau Rivière Serpentine and back to the Trou du Glaz. It's about 1km and 60m of difference in height (up and down, ofcourse).