Parking in Bonnevaux du Bas, on the grass behind the bell tower of the old cloister. Yellow, blue, white and red markings, with a large section without markings
(S/E) Head towards the signpost, which marks the start of the hike. Climb into the woods via the path on the left, towards Bonnevaux du Haut - Rocher du Tourbillon. At a hairpin bend, join a rockier path and continue climbing to the right. After about 200 metres of fairly steep climbing, look for the path on the left that descends and joins the D280 at a bend.
(1) Follow it up to the next bend and continue straight ahead along the path that leads back into the woods.
(2) You will soon come to a crossroads. Turn left towards the Rocher du Tourbillon viewpoints (the first upstream, the second downstream). Retrace your steps.
(2) Climb up to the left. The path quickly splits. Take either branch, as they rejoin further on. You will soon come to an X-shaped crossroads. Descend to the left towards the Grottes de Plaisir Fontaine caves.
(3) At the stony path that runs alongside the pastures, descend again to the left. You will re-enter the woods.
(4) Join a path at right angles and descend to the right towards the old railway line.
(5) Turn left onto the beautiful gravel road that has replaced the old Tacot railway line (signpost for Ornans). Go through a 180-metre-long tunnel, which is normally lit automatically, then pass in front of the old small station, joining the D 280, which you follow to the right for about 100 metres until you reach a stop sign.
(6) Twenty metres after this sign, climb up the hillside on the right via the path, losing sight of the markings. After a steep climb, leave a path on your left. Pass at the foot of some beautiful rocks, which you go around to discover a beautiful mossy sunken path that looks like a haunted forest. You will come to a farm track with muddy ruts, which you should avoid by walking along the edge of a fir tree plantation on your right. At a sign saying "Réserve de chasse" (hunting reserve) and a "No. 22" painted on a tree, climb up to the right towards the ledges.
(7) At the ledges, the path turns left, running along the ledges at a distance.
(8) When it turns slightly to the left and you see a white and red pylon between the trees, take the path on the right that passes under the lines, offering a new view of the valley. The path enters the woods and quickly crosses a wider path. Cross it and continue downhill on the small path opposite. You will soon come to a fork in the path. Take the left fork.
Be careful, as the path on the right quickly leads to the cliff edge. Continue along the ledges, passing beautiful crevices.
(9) At a forked tree (the trunk splits in two) that is partially hollowed out, you will come to a fork with a wider path. Descend via the path on the right. You will cross some sharp limestone pavements. Fifteen steps later, the path forks. Descend to the right. At the bottom, you will join a path at right angles. You are above the tunnel. Turn left to carefully reach an unsecured viewpoint.
(10) Retrace your steps for about fifteen steps and continue along the path that climbs to the right. Opposite a beautiful rock, it turns left as it climbs.
Caution: If you find yourself at the top of the embankment, facing the rock, you have gone too far. Go back up about ten steps and continue climbing.
Quickly leave a small path on your left, continuing the climb to the right, staying straight on this well-marked path which begins to descend. It becomes a wider path overlooking the Tacot track. Continue straight ahead until you come to a wider dirt track at right angles, which you will descend to the right to rejoin the Tacot track.
(5) Cross it and climb back up the arrival path (Mountain Bike Route 27).
(4) At the fork (signpost), do not turn into the pastures but continue straight ahead (right-hand path) towards the Grottes de Plaisir fountain.
(11) When you hear the murmur of the stream, start looking on the left for the pretty path that runs down along the rocks (about ten metres before a yellow and blue signpost). At the bottom, on the wider path, turn left along the fence for a round trip to the caves. Turn back and continue straight ahead to the fish farm.
(12) Continue along the small road that passes in front of a refreshment bar, open in summer.
At the departmental road, turn left towards the hamlet, taking care when passing beneath the beautiful rocks of Le Tourbillon, and continue straight on to the cloister (S/E).

