Parking is available on the right, on a stony area, at the very beginning of the Fort de Brégille esplanade. There are no markings, but there are marker posts at certain intersections.
(S/E) As you get out of your vehicle, you will already have a beautiful view of the old town. Walk up towards the entrance to the fort, leaving the path that descends towards the town centre to reach a superb viewpoint over the Citadel overlooking the Faubourg Rivotte. Continue towards the corner of the fortifications and turn left onto the path running along the foot of the walls. At the next corner, at the foot of a post, leave the fort's moats and climb to the right towards Grand Désert, where you will find new views of the Doubs valley. Stay on this path, which runs along the top of the moat, and climb the few steps of the log staircase.
(1) At the end of the fort, take the path that leads into the thicket on the right, continuing along the ledges. Stay on this well-marked trail. Soon, on your right, you will pass a steep path that descends the hillside. Go up the small gravel path on the left. You will arrive at the Grand Désert plateau. Then turn right onto the stony path, following the edge of the forest to rejoin the fitness trail, a wide stony forest path.
(2) You will enter the woods, passing an old bench. Quickly leave a path that branches off to the left, continuing straight ahead until you reach a crossroads marked by two signposts. Continue straight ahead towards Chalezeule on the fitness trail. At station no. 7 (in the opposite direction to the walk) and at the signpost marking a new X-shaped crossroads, leave the trail and take the path on the right.
(3) At the nearby crossroads, marked by two signposts, one on the left and one on the right, head towards the one on the right (No. 131). Take the path on the left for about 30 metres and, at the new fork, descend to the right towards the Renard cave. Climb back up the path on the other side of the cave, then descend to the left along the steep path, using the rope handrail for support. At the bottom, at the wooden ramp, turn left. Stay on this path, passing old dry stone walls, remnants of our terraced crops of yesteryear. At a diamond-shaped junction, go up to the left.
(4) You will arrive at the Clementigney viewpoint overlooking the Doubs valley and the ruins of the feudal castle of Montfaucon. Set off again along the path near the rubbish bin, following a wire fence. At the nearby X-shaped crossroads, turn right. Quickly, at the next fork, go down to the right along a small mossy wall. Shortly after walking along the back of a building, at the nearby fork, continue straight ahead to reach a signpost. Turn right, reaching a turning area. Walk down the street for about a hundred metres.
(5) Opposite stairwell 37 of the building, head back into the woods via the path on the left. Ignore the path that branches off to the far left and continue straight ahead (towards Le Grand Désert). The path becomes gravel. Stay on it until you reach the beautiful forest lane "La Grande Sommière", which you take on the right. After the wooden barriers, continue straight ahead. Then go up the tarmac road on the left for about a hundred metres and, opposite the reservoir, head back into the forest lane going down to the right. Then go up the tarmac road on the left to reach the esplanade (S/E).
The route includes cliff-edge paths and unsecured viewpoints. The paths are rocky and slippery in places. Sturdy footwear is essential and walking sticks are recommended.