(1) From the Hameau de la Diat, at the end of the swimming pool parking lot, turn left up to the gîte de Valombré (yellow markings), where you turn right. (2) Follow the signs for «Pierre Mesure» to the signpost of the same name, then continue past the Granges de Pleynan, where you turn left downhill to the hamlet of Les Revols. (3) On the road out of the Hameau turn right, the road loops around to the left and then turns right towards the Hameau des Cottave (4). At Hameau des Cottaves (5), turn back to point (4). Take the «Chemin de St Bruno» on the opposite side of the road. downhill towards the hamlet of Les Marrons. (6) Before this hamlet, you join the road leading up to Col de Porte (take care!). At the end of the hamlet of Les Marrons, after the campsite, turn left towards the hamlet of La Martinière. (7) At the entrance to this hamlet, turn right, and 200 m further on, take the left-hand path which leads to a meadow and crosses it. It then twists and turns downhill through the forest to reach the Diat site, and continue on to the start.

Admission fee : Free access.

Opening : From 01/04 to 31/10. Subject to favorable weather.

Area : Cœur de Chartreuse