Park in the car park on the left of the D111 road, which serves Chamrousse from Vaulnaveys-le-Haut, before the circular road at Baraque de Boulac
(S/E) Take the small path below the car park to avoid the forest road to the hut, which is wider but busier. Pass by small frozen waterfalls as you walk along the mountain.
(1) Continue and pass a final valley. The path branches off to the left. Join the Rouast forest road.
(2) Take it on the left and begin an easy descent to reach Pré Gaudet and the Gaudet Forest Chalet with its grove of fir trees.
(3) Go around it, then take the path again and veer left to start climbing. Reach the Fontaine de la Rebellière. Continue climbing, cross the Ruisseau de Rioupéroux and then reach the GR®549 crossroads, the highest point of the route.
(4) Turn right and descend to reach the Baraque de Boulac, continue for a few metres to
return to the car park at the side of the road (S/E).