From Château, after the bridge over the Ayasse Torrent, walk alongside the torrent and the picnic area for a short distance until you reach Karlantze; from here, continue round the mountainside, enjoying the spectacular view, until you come to the mountain huts, now in ruins, of Porte.
From here, go right up the La Leigne valley, first to the Ourty pasture, then, after you cross the two bridges over the “Torrent du Bois”, the route climbs gently up within the conifer woods and reaches the long plateau of Sant’Antonio and the Chenessy pasture.
The route now takes left and goes back up the mountainside, partly through steep fields and partly across stony ground, until it soon reaches the pass della Fricolla.
The path now starts to descend along a traverse on the mountainside and then crosses some stretches of stony ground that lead to the Breuil hut, from where there are superb views, including a glimpse of the village of Brenve below.
From here, cross the long plateau and go back onto the path that runs down towards the pastures of Lettaz and Miallet, then runs alongside the steep walls of the “Mont De Plodze”, passes the houses (now empty) of Fontana and leads to the village of Crest Damon, where it is possible to spend the night.