The Col des Perris Blancs can only be reached from the west side of the mountain.
For safety reasons, the section between the La Tourche hut and Pont de Nant, in either direction, no longer crosses the Col des Perris Blancs. Its eastern side (between this pass and the Vallon de Nant) is closed. [...]
The Col des Perris Blancs can only be reached from the west side of the mountain. Read more