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Parking in Boussières after the waste collection centre, where the small tarmac road ends in a cul-de-sac. Yellow-red markings.
(S/E) Take the forest path on the right (mountain bike route 38). After about 250 metres, ignore the first path on the left and take the second path on the left, which climbs up to the chapel.
(1) The Notre-Dame du Mont viewpoint offers an exceptional view of the Doubs valley and its meanders, the Jura mountains and, in the foreground, the keep of the feudal castle of Montferrand. In the 17th and 18th centuries, many pilgrimages were organised here. Continue to the right, following the barriers, along the path that runs alongside the cliffs. After 500 metres, at the fork, descend the hill to the river via the path on the left, marked by a signpost at the corner of a low wall.
(2) At the edge of the woods, with the ruins of the old mill in sight, immediately turn left onto the small unmarked path that runs through the tall grass and along the canal to the Percée de Thoraise.
(3) Do not enter the tunnel immediately, but climb the stairs above it.
(4) Walk to the cycle path to see the circular basin where barges can turn around. Carefully descend to the left to the riverbank for a lovely view of the Château de Thoraise. Retrace your steps back to the tunnel entrance.
(3) Go through the Tunnel Monsieur dit la Percée de Thoraise. It is a 185-metre structure dating from 1810. At the lock, cross the canal and turn right, walking along the other bank.
(5) At the end of the small road, continue straight ahead until you reach the stop sign on the D105 and turn right onto Route de Boussières until you reach the village exit. When the pavement ends, cross the road and take the forest path that starts in the space between the safety barriers. At the wide gravel path, turn right towards the waste collection centre. Then turn left onto the small tarmac road to return to your vehicle (S/E).
Rocky and slippery paths in places. Sturdy footwear is essential and walking sticks are recommended.
Visorando member
Moderate 
