Access to the car park: in Mezilhac, take the D102 towards Saint-Christol. At the first crossroads, 600 metres further on, turn left onto the D204 to the Col des Fourches. At this crossroads, turn right onto the hairpin bend towards Saint-Genest-Lachamp. Continue for 3.8 km. The car park is on the left (large space) just opposite a descending forest track.
Markings: White-yellow to Rocher de Don.
(S/E) Go down the forest track opposite the car park to the bottom of the valley.
(1) Pass above the hamlet of Curins and continue straight ahead. Cross Crouset after a hairpin bend to the left. The tarmac road continues along a path (there is a sign saying "No entry except for residents").
(2) Leave the forest track in front of a large chestnut tree (there is a wooden sign saying "Croix de Don" and a sign saying "Réserve de chasse et de faune sauvage" [Hunting and wildlife reserve]) and take the path on the right that goes up into the forest. Continue straight ahead, ignoring the paths on the left and right. At the top, you will come to a forest track.
(3) Turn right and walk a few dozen metres to reach another four-way crossroads. Take the path opposite, slightly to the right.
(4) When you reach the Croix de Don crossroads (marked by a wooden cross), turn right. Then keep to the right at the junction overlooking the buildings of Villard and continue straight ahead until you reach a new track.
(5) Turn left. Cross the fences and then turn 90° to the left (south) to reach the summit of Rocher de Don.
(6) Turn around and head back to the previous crossroads.
(5) Take the track opposite, until you reach the road. Turn right and follow this road back to the D409a car park (S/E).