Departing from Retournac, drive towards Yssingeaux (D103), and after 2 km turn left at a crossroads towards Mercuret Castle, Les Revers. Pass the castle, continue straight ahead and pass through the village of Chenebeyre. Do not continue to Les Revers (horse riding centre) but continue for about 200 m and then turn left and park in a field: a sign indicates the start of the circuit.
See transport to get there
Short 2 km walk (there and back) following the PR336 "Mercuret Castle", signposted in yellow. The start of the interpretation trail is indicated by a specific sign: over 1 km and a climb of 100 metres, 16 signs will offer you the chance to discover the common local trees species through tales, symbolism and their uses in popular culture. It is not a loop and you have to follow the same path on the way back.