In Bourg d'Oisans, head towards the school and park in the gymnasium car park.
(S/E) Then take the path that runs alongside the stream (signposted Col de Solure). You will come to a distinctive dyke made of tyres.
(1) Descend into the stream bed, cross it and start the climb up through the woods on the opposite side. The slope is very dry, but the series of switchbacks make for easy and efficient progress.
You will then reach a forest hut below the path.
(2) Continue along the path and at the next bend, leave the track and take a good path on the left (markedGR® Red and White) which cuts across the bends in the track. Then rejoin the track to reach the Col de Solude.
(3) Take the newly constructed path on the right, markedPR® (yellow), through the undergrowth and then across the meadows to join the track that leads to the Col Saint Jean pass.
(4) Descend via a new path through the mountain pastures, which enters the forest below Tête Fromentières (sign). The winding descent continues to the ruins of Le Puy.
(5) Here, a sign indicates Bourg-d'Oisans and La Paute via the path on the left. Do not take this path, but instead take the one on the right (yellow marker on a tree) to reach and cross the Ruisseau du Rat stream.
(6) Continue through the forest and follow an almost horizontal path to reach Bourg-d'Oisans and the car park where you started (S/E).