(S/E) Set off from the Corrençon snow sports centre, following theGR® southwards (Vercors crossing route).
(1) Pass the45th parallel marker.
(2) After 1,400 metres, turn right towards Grotte Barnier.
Continue to the junction with the path leading to the Col de la Coinchette. Turn right to cross this pass and descend towards the Darbonouse plain. Once you reach the plain, turn right to climb to the Col de la Sarna via the groomed cross-country ski trail on the descent on the other side.
(3) At the Col de Sarna, walk past the Grotte de l’Ours.
(4). Once on the plain, follow the fairly wide track to the left (heading south).
(5) Follow the forest road to the turning point, then turn left onto the start of the Bacha de l’Ours trail (it’s easier with GPS; otherwise, count the bends on the map).
Follow a clearly defined valley which takes you back to theGR®91just before the Canyon des Erges.
(6) Follow the mainGR®91track to the left towards the Darbonouse plain (north).
(7) Cross the plain, following its right-hand edge and staying slightly higher up. Turn right at the sheepfold (signpost). After a short climb, follow theGR®91as it heads into the forest, passing the Carrette hut.
(8) Reach the Corrençon car park (S/E) by following theGR®91, which is clearly marked and even groomed towards the end.