(S) From the Ville des Glaciers car park (1789m), descend towards the torrent.
(1) Cross it via a footbridge and continue north-east along the track towards Les Mottets.
After passing a building and crossing a stream, the track turns into a path.
(2) Leave it shortly before reaching Les Mottets and take a new path that climbs to the right via a series of tight hairpin bends and quickly gains height.
(3) At an altitude of 2,089 metres (sign), ignore the path that branches off to the right towards Ouillon. From here, the route is clear: the path continues to climb, crossing the Roget stream or its branches several times.
(4) Reach the Col de la Seigne.
Descend via the same route back to the car park (E).