Description of the route
Park the car in Gimillan, in the municipality of Cogne. Take route 8 on the right of the village, which goes into the Grauson valley. Along the way you come to the pastures of Tchezeu, Pila, Crouzet and Grauson Desot. When you get to a junction, 20 minutes on the other side of Grauson Desot, continue north (8A) towards Alpe Grauson Dessus (2548 m). Before Grauson Dessus, take the right itinerary 8B at a crossroad, which continues first towards Lago Coronas and then towards the pass, from where you can enjoy the wonderful view over the Matterhorn. The mountain pass connects the Cogne valley with the municipality of Saint-Marcel 11 km from Aosta.