Park at the Col de Lessy car park.
(S/E) Take Rue des Carrières, then take the first path up on the right (red and white barrier). Continue straight ahead and cross the bastioned entrance to the fortified complex.
(1) Walk along Fort Girardin, continue along the path and turn left. Continue straight ahead and look for a small path on the left (difficult to see) that runs alongside a long barracks (note: just before this, several paths turn to the left and are dead ends. Do not take them).
(2) Turn left onto this path and walk along Fort Saint-Quentin. Just after the barracks, take the first path on the left that goes up to the plateau. Follow this path, which runs diagonally towards the middle of the plateau, then take the first path on the left (difficult to see because of the tall grass) which leads to the armoured batteries (surrounded by trees).
(3) Once there, turn around and return to the bottom of the path at the corner of the barracks. Continue straight ahead (do not take the path on the left or the one that runs alongside the barracks) and continue along the path until you reach a crossroads. Continue straight ahead (do not turn right) and walk along the dry moat of Fort Diou on your right until you reach a tarmac road (the radio tower is directly opposite and the entrance to Fort Diou is on the left).
(4) Turn left, pass the radio tower and follow the road downhill from the radio tower. Three-quarters of the way down, a dirt track turns sharply to the right.
(5) Turn right onto this path (marked with a red circle) and continue straight ahead until you reach the first crossroads.
(6) Take the path that descends steeply to the left, then climb up to the Bismarck tower (directly opposite). Then return to the crossroads after the steep climb.
(6) Turn left. Go down the dirt track that leads to the tourist road (tarmac road. Watch out for cars!) and continue straight ahead to the viewpoint on the left. Then continue along this road which descends to the Croix du Gibet.
(7) Take the path on the right (Chemin Croix de Rose). Continue straight ahead and turn right at the first V-shaped junction. Then continue straight ahead to the Col de Lessy car park (S/E).
