From the chalet bar at the Lac de la Rosière, cross the mountain stream and proceed left towards the water. Then take the forest path to the right, leaving the lake, which leads up into the forest.
After 30 minutes of walking on a good route, take a path on the right that is well marked, leading steadily up into a spruce forest, which gradually turns into mountain pines (1). At the second hairpin bend in the path (2), leave the normal route up to the Dent du Villard on your right and continue straight on. Less frequented and narrower, this path overhangs the cliffs of the “Dent” and then rises up in small paths above the Bozel valley in a beautiful forest of shaded pines, bathed in the sweet scents of orchis and juniper. Just before the summit, rejoin the normal path for the ascent to the Dent. On the way back down from the summit, follow the ridge to the south. The path winds among the gypsum swallow holes before turning off left to descend several metres on to the eastern slope (the side of the Planay valley) and then get back on the Courchevel slope. You then come out on the Chal “col” (mountain pass). Take the path to the right, which gets very steep after several metres on the flat (very slippery in wet weather) and quickly descend to the la Rosière valley. When you arrive at the foot of the slope, cut across the botanic trail before reaching the mountain stream. You then return to the chalet bar on the right where you began your walk.
| Departure | Lac de la Rosière (ascent via the path through the pine woods) |
| Arrival | Lac de la Rosière (descent via the Chal col) |
| Height difference on ascent | 748 m |
| Duration | 4 hours (of which 2 hours 30 minutes ascent) |
| Starting Altitude | 1536 m |
| Highest altitude | 2284 m |
| Difficulty | A fairly arduous walk (leave early in the morning, no water on the route, do not attempt this walk with young children) |
