This itinerary invites you to a total immersion in the jewels of the Valsavarenche valley, among panoramas, fauna and flora of exception. A long and demanding loop, reserved for experienced trailers, to be done over one or more days, sleeping in the valley's refuges. You can shorten the route at any time if necessary by taking the other loops of the Espace Trail, as this itinerary is the junction of several routes.