Walk along part of the Mercuel valley in the forest to reach the Refuge de l'Archeboc.
Map available in digital and/or paper version at the Tourist Office of the resort.
Follow the road to Sassière and cross the hamlet of La Savonne. 200 m later, take a path on the right (signposted "La Motte"), cross the torrent, continue on the path, cross the forest and arrive at Les Côtes. Continue straight ahead: the refuge of Archeboc is well in sight in front of you after the path makes a slight turn to the left. Continue past the refuge on a path that turns left, on the left of the torrent. Continue on the path until you reach the water intake (footbridge and concrete block). Turn right, take the flat trail until you see the power plant. Turn left to find a footbridge to cross the torrent. Go back to the parking lot by the road.