From the car park, retrace your steps for 300m and take the path to the left, which leads to the edge of the forest, and then continues uphill alongside it. Then walk alongside cultivated fields to join another path, and turn left. The track rises at first before descending to join up with the road to Trézanne. After the Romanesque chapel, walk up to the Col de Papavet. From the pass, continue to the left along a wooded ridge until you reach the Col des Pellas. Descend into the hamlet of Les Pellas (typical houses of the Trièves region). Follow the road to the left for 500m, then, on the bend, continue straight ahead, towards the Col de l'Aupet. You will pass paths off to the right which lead to Pas des Bachasson and Pas de la Selle. A forest track, which starts off steep, will take you to a point above the La Pisse waterfalls. The many fallen trees beneath Mont Aiguille are testament to the harshness of this steep slope. The track continues on a gentle downhill slope to reach the Col de l'Aupet. Take the path on the steep, south-west side of Mont Aiguille to descend. The path emerges among the meadows of the Côtes de la Doux before reaching the bottom of the valley. Turn left to head back to the car park.
Marking : Yellow-and-green (Vercors Natural Park)
Equipments : Car park,

Delicate passages : This long hike requires a good level of physical fitness. In spring, enquire about the presence of névé in the steep, craggy sections.

Admission fee : Free access.

Opening : From 01/05 to 01/09. Subject to favorable weather.

Area : Trièves