An easy 2.5 km route along forest trails to discover all the secrets of trees.
The discovery trail "Trees, between the visible and the invisible" takes walkers into the heart of the fascinating Risoud forest, one of the largest in Europe. The trail starts at the Apollo refuge, above the village of Le Brassus.
Ten richly illustrated panels and audiovisual presentations help walkers understand recent discoveries about how trees work and gain a new perspective on the close relationship between trees and humans.