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From Saint François Longchamp, head towards the Col de la Madeleine. In one of the last bends before the pass, you will find the Lauzière chairlift with parking space.
(S/E) The trail starts below the departure station. Cross it heading north and the trail starts on the left, heading east. You will then cross a mountain pasture and should take care not to disturb any animals that may be there.
(1) At the signpost, continue straight ahead on the trail towards Col de Montjoie, as indicated. You are now in Grande Pierraille, an area where black grouse may be found.
(2) At the new crossroads, a signpost indicates the right direction. Continue in the same direction and the climb begins. After a fairly steep section with hairpin bends along streams that can sometimes overflow onto the path, you will walk on a flat section. You will pass close to small mountain lakes.
(3) At the crossroads, continue in the same direction. The path then climbs gently. You will cross several small ridges before seeing the final section and the pass.
(4) You are now at the pass. You can climb a little on either side, especially as there is a path, not marked on the map, leading south-west.
On the left, you will reach a first pile of boulders, where the view is clearer, but the route to Roche Bénite seems uncertain. Descend back to the pass.
(4) Follow the path that leaves the pass to the northeast and arrives below the ridge line.
(5) Shortly after the hut, climb up following this ridge. There is no path.
(6) The slope becomes less steep as you reach a point where you can access Roc Rouge. The weather conditions prevented me from completing this last section. To descend back to the pass, it seemed easier to go slightly down the south-east slope rather than back along the ridge.
(4) Once back at the pass, we return via the ascent route to reach the car park (S/E).
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Association / Club / Walk leader
Difficult 
