Guidebook with maps/step-by-step
After descending to the bottom of the station, you'll reach the Porte de l'Enclos (entrance to the Grande Chartreuse domain). You’ll embark on a long ascent of 1000m+ while passing by the Museum and the Monastery Convent (please respect the tranquility of the area!).
After an initial forest section along the chapels of Saint-Bruno and Casalibus (without entering), you’ll cross the first meadows at the Col de la Ruchère before tackling more exposed sections at Petit Som.
Next, you’ll find yourself on the plateau of Habert de Bovinant before reaching the summit of Grand Som. The descent starts with some tricky sections at Racapé, followed by a pleasant sequence of switchbacks from the Col des Aures (optional detour to the col du Cucheron for a view of the Entremont valley).
At the foot of this trail, you’ll make a brief ascent before switching to the slope of La Scia and returning to the base area via a scenic path.
After an initial forest section along the chapels of Saint-Bruno and Casalibus (without entering), you’ll cross the first meadows at the Col de la Ruchère before tackling more exposed sections at Petit Som.
Next, you’ll find yourself on the plateau of Habert de Bovinant before reaching the summit of Grand Som. The descent starts with some tricky sections at Racapé, followed by a pleasant sequence of switchbacks from the Col des Aures (optional detour to the col du Cucheron for a view of the Entremont valley).
At the foot of this trail, you’ll make a brief ascent before switching to the slope of La Scia and returning to the base area via a scenic path.
