La Truffière

Grotte du Grand Roc

A forest of crystals inside the cliff

8 min from La Truffière

Photo: SémhurCC BY-SA 4.0

Rare formations halfway up the cliff

Discovered in 1924, the cave shelters helictites and unique triangular crystals. The entrance overlooks the whole valley, and the Laugerie-Basse prehistoric shelter can be visited just below.

  • Good to know
  • Guided tour
  • Allow 1 hour