The hike starts from the Col de la Chau car park.
(S/E) Follow the road for about 200 m.
(1) Leave the departmental road and turn right onto the Route Forestière du Col de la Baume.
(2) Leave the forest track and turn left towards Pied Saint Martin - yellow/green signposts.
(3) Descend on the left along the path. At the track, turn right and continue until you reach a crossroads (Pied Saint Martin).
(4) Cross it, head opposite towards Haut de Bournette and you will come out onto a forest track.
(5) Cross it, descend opposite and continue on the Pelouse de la Bournette. You will come to another forest track (signposted "Haut de la Bournette").
(6) Cross it and, after 100 m, turn right into the meadow and follow Crobache - Snowshoe trail no. 6. After a large bend to the right, heading south, you will come to a T-junction with a sign for "Plaine Longue".
(7) Take the path on the left towards Crobache and its refuge, leaving snowshoe trail no. 6 on your right. When you reach a crossroad running alongside the Plaine Longue, turn left and continue until you reach the Refuge de Crobache.
(8) Continue along this main road until you reach a Y-junction at Pré Pellet.
(9) Take the track on the left towards L'Estouble.
(10) Cross the forest track and continue straight ahead to reach the viewpoint over the Combe de Loscence, the village of La Chapelle en Vercors and the peaks on the eastern edge of the Vercors.
(11) Retrace your steps.
(10) Head left along the forest track and, after the hairpin bend, look for a path starting on the left.
(12) Climb up the path on the left to reach the Serre Plumé ridge and its summit. Beautiful panorama and superb 360° view of the entire eastern chain of the Vercors.
(13) Descend to the Col de la Mure.
(14) At the "Col de la Mure" sign (1,415 m), turn right and climb slightly for about 100 metres to find a second "Col de la Mure" sign (1,425 m).
(15) Go up to the left along the forest track towards "Pelouse d'Herbounouse".
(16) Follow the road to the left towards Petit Pré / Col de la Chau for about 200 m until you reach a forest track.
(17) Cross it and continue straight ahead on another track. Reach the "Petit Pré" crossroads (sign).
(18) When you set off again, turn right and follow the signs for Col de la Chau / Grange de Vauneyre. Pass the barn and continue to the departmental road.
(19) Go up it on the right to reach the car park (S/E).