Access via Voreppe, Route de Bourg Vieux. Outside the opening hours of the Stravinsky School, parking is permitted in front of the school. Otherwise, park 100 m before the school, opposite the apartment blocks, or on Chemin des Rayettes in front of the houses.
(S/E) From the car park, with it on your left, join Chemin des Rayettes. A large boulder then appears through the vegetation and just after it, a path cluttered with roots branches off to the left. This is the access path to the ramp that determines the rest of the route.
(1) Climb onto the large boulder to see the position of the ramp on the right, which is covered with vegetation. Ignore the two paths on the left, continue along the steep path and you will reach the ramp.
(2) Once you reach the base of the large white cliff, the ramp is close by, with a fixed rope in the most exposed section. You will then come to a bend and the ridge.
(3) The path turns left: this is the exit from the ramp. The slope is steep, and you never stray far from the ridge. Then join the Chemin du Belvédère de Bellevue.
(4) This is on the left. After visiting and taking photos, take the Aiguille de Chalais trail on the left. It is equipped with wooden barriers and cables in places. When you reach the Aiguille, turn left.
(5) After admiring the view and reading the information panel, return to the previous crossroads and turn left towards the Couvent de Chalais. You will come to a fork with the Chemin du Belvédère de Bellevue.
(6) Turn left towards the Couvent de Chalais and go around it by taking the path opposite at the intersection. Continue to the path on the right.
(7) Take this path, which descends between the pastures. After a hairpin bend to the left, leave a path marked with blue markings on your left.
(8) Continue to the right and join a wide track which you should follow downhill. After a hairpin bend, you will come to a fork with a grassy track.
(9) At the crossroads of several tracks, take the one on the right; it is grassy and poorly maintained but cuts across the main track.
(10) Follow it to the right until you reach a path with blue markings on the right.
(11) Follow this path, which cuts across again. Be careful, as the slope is steep. Return to the track.
(12) Turn right and pass close to the old Sautaret cement factory. Continue to the Chemin des Rayettes trail on the right.
(13) Turn right. Pass the base of the southern ridge of the Aiguille de Chalais, which you climbed earlier. The ramp is just after, higher up in the vegetation. Arrive at the crossroads from the outward journey.
(1) Continue straight ahead and return to the starting point via the same route you took on the way up (S/E).