From the village of Autrans, take the D218 towards La Sure. At the Mortier tunnel (permanently closed), continue along the Route Forestière des Feneys (not cleared of snow during winter). Just before the refuge of the same name, take the road on the left leading to the Molière car park.
(S/E) Leave the car park via the information point for the Molière Sensitive Natural Area. Reach the meadow where an orientation table has been installed. From there, head due north, taking the wide path that leads to the Les Génisses junction.
(1) Leave the Sentier des Génisses and turn right onto the path leading to the hamlet of Les Lapiaz: marked with yellow and green signs.
(2) Continue to the right, following the red and white markings of the GR®9. Walk to the next junction, located about 200 m further on.
(3) Turn right onto the path leading to the Fork in the road at the Sornin.
(4) Turn left towards "La Dent du Loup". Cross the hamlet of Sornin and continue to the junction on the Sornin Plateau: follow the yellow and green markings.
(5) Continue straight on to reach La Dent du Loup and its majestic electricity pylon, from where you can enjoy a sweeping panorama of the Isère valley and the Chartreuse massif.
(6) Turn back.
(5) Start the climb up the Sornin hill on the right. Pass a shepherd’s hut, enter the forest, and continue until you rejoin the GR®9.
(3) Turn right and follow the path taken on the way out until you reach the hamlet of Les Lapiaz, which has a sharp limestone pavement.
(2) Follow the signs for “Malatra” on the right, keeping to the red and white markings. The path, lined with numerous sharp limestone pavements, leads to the Malatra crossroads.
(7) Leave the GR® 9 and follow the path branching off to the left, which leads to the Plénouze pastures: yellow and green markings.
(8) Continue along the grassy path to Sous Plénouze.
(9) Pass the path on your right leading to Font Chaude, and continue left towards La Molière. You’ll soon rejoin the Sentier des Génisses.
(1) Head straight on to return to the car park (S/E).