Description of the route

From the square in the municipal capital, follow the dirt track that goes up to the hamlet of Crépin and continue towards Alpe Les Foressus (itinerary 4). A few dozen metres before this pasture, at the crossroad with the road from Alpe Charavellessaz, take route 4 which goes right, then left, and cross a wide plateau heading towards Alpe Cleyvabellaz. From here, continue up until you come to a crossroad with Alta Via 1. Take the right branch and go up a small valley at the top of which you find Col de Nana.