Park at Arc 1800 in the Transarc 1 cable car car park. Take this cable car, then the Transarc 2 cable car. Get off at the top station.
(S/E) Take the track opposite downhill to reach the Col de la Chal.
(1) Turn right, continue downhill for a few metres until you reach a Y-junction at the bottom of this descent. Keep left to begin a long, gentle climb, leading to an unnamed pass.
(2) Continue downhill and, via a series of hairpin bends, reach a crossroads of paths.
(3) Continue downhill to the left and arrive at a fork in the path near the refuge.
(4) Carry on to the right and you’ll soon reach the Mont Pourri refuge.
(5) Walk past the refuge, then head towards the path. Continue along the mountainside on a gentle incline until you reach the former Refuge Regaud, now converted into a small eco-museum.
(6) Return in the opposite direction to the Mont Pourri refuge and then to the junction you passed on the way there.
(4) Turn right onto the path leading up alongside the torrent, first at the bottom of the valley and then via a steep climb to join the path coming from the ridge.
(7) Continue uphill to reach Lac des Moutons.
(8) Then head back down the wide track to rejoin the Col de la Chal.
(1) Follow the route you took on the way up in the opposite direction to the Transarc 2 top station (S/E).
Then take the cable cars or walk down to return to the Transarc 1 car park.