Coming from Saint-Agnan-en-Vercors or the Col de Rousset, take the Charbonnières forest road which heads east into a coniferous forest. Drive for about 6.5 km (caution: narrow road) and park in the car park on the left, just before the Maison Forestière de la Coche.
(S/E) Leave the car park, turn left onto the tarmac road and continue straight on along a forest track which is usually closed by a barrier.
Continue along this route to the Maison Forestière de Pré Grandu.
(1) In front of the forest house, take the track at a 90° angle to the left and follow it for just under 100m.
(2) At this junction of three tracks, take the one on the right. This track then climbs gently in small hairpin bends.
(3) At this new junction of three tracks, stay on the one on the left. Follow this track for several kilometres, passing halfway along the Baraque de Gerland (a drinking trough with a tap on the right below), then another forest house a little further on. At the fork, continue to the left.
(4) The track continues to the Grande Cabane, which is best avoided during the summer grazing season (due to the presence of livestock and dogs). Take the path on the left marked by cairns and descend the slope.
(5) Return to the path climbing towards the Grand Veymont (signpost). At the fork, continue right, climbing uphill.
(6) Begin the climb up the rocky path to the Pas des Chattons, south of the Grand Veymont. The path first passes through a gap in a rocky ridge, which suggests this might be the pass, then continues climbing up a grassy area flanked by rocks.
(7) There are no signs indicating the location or altitude, but it’s a safe bet that the Pas des Chattons is somewhere around here! Don’t hesitate to go a few metres further to the edge of the cliff; the view over the Trièves plateau, the Oisans and Mont Aiguille is well worth it. Caution: dangerous area, precipice!
Turn back and head down to the signpost via the same route.
(5) At the signpost, turn right to avoid the Grande Cabane and head for the path climbing up the slope about fifty metres away. A hundred metres further on, join the track leading to the sheepfolds. Follow it to the right for 4.3 kilometres, passing the forest house halfway along and then the Baraque de Gerland (water point below on the left).
(8) At the foot of a rock, at the edge of the track, a sign indicates a pedestrian shortcut leading to La Coche. This shortcut begins 5 or 6 metres further on, to the right and downhill (do not climb the rock at the sign!).
This well-marked path joins a track. Follow it to the left for about 200m.
(9) Turn right onto a path that takes the shortest route (no sign!).
Return to the starting car park (S/E).
