Access: from Villard-de-Lans, head towards the Nordic site, pass the village of Bois-Barbu and continue past the ski slopes and the Auberge de la Glisse on the Herbouilly road until you reach the "Porte de Bois-Barbu" sign at the intersection with the Galmiche Forest Road, the starting point for this hike.
(S/E) From the car park, take the Route Forestière de Galmiche for 150 m and take the path that enters the woods on the right. A few steps further on, turn right again to rejoin a forest road (the "Bordennet" track).
(1) Turn left for 250 metres, then turn onto the path that enters the woods on the right and heads towards Combe Verte/Grande Allée. The path crosses another road (Loubet track) before coming out onto the Grande Allée Forest Road.
(2) At the crossroads, the path descends into the woods between the two roads. A little further on, it emerges onto the Grande Allée forest road, which it follows first on the right and then on the left, before finally crossing back over and turning right onto the Pison track.
(3) Shortly afterwards, leave the Pison trail on the left and follow the Route Forestière de la Grande Allée until you reach the Auberge de Malaterre.
(4) Leaving the inn, take the same path and quickly turn right towards "Sapin BELLIER" via the path that runs alongside and then crosses the Route Forestière des Charbonnières and continues to the Carrefour de la Glacière.
(5) Turn left onto the GTV (Grande Traversée du Vercors). After 250 m, turn right towards Les Granges, then immediately left towards Sapin Bellier.
(6) Continue north through the Forêt de la Louvière, passing close to Sapin Bellier, named after the forest ranger who spotted it nearly a century ago. The trail runs alongside the Route Forestière de Galmiche until the next intersection, where it joins a logging road. Turn right and continue east towards the Col de Liorin.
(7) Turn left towards the pass, and quickly take the path that branches off to the left and descends to the Galmiche Forest Road, joining the La Forestière track.
Once on the Galmiche Forest Road, it is only about 50 metres to the right to reach the car park (S/E).