Departure from Col du Calvaire. Parking on the right side of the road when coming from Orbey, on the left when coming from Col du Bonhomme or Col de la Schlucht.
Yellow ring markings
(S/E) Take the wide, flat path that heads east towards the Duchesne Cemetery and the Tête des Faux (signs, numerous markers of different colours). Pass under the high-voltage power lines and head north-east into the forest, staying on the main path and ignoring the side paths and perpendicular paths.
(1) At Ferme des Immerlins, continue along the main path and ignore any side paths. The path gradually curves northwards and, at the crossroads with a "Massif des Faux" information sign leaning against a rock, take the path that climbs to the left. You will soon reach Duchesne Cemetery.
Markings: Yellow Ring + Red Rectangle
(2) Facing the information sign, go left (signposts on a tree) and turn right at the corner of the stele dedicated to the Alpine hunters. At the fork that appears immediately, take the path on the left. This path, paved with large stones, climbs between the trees to reach a flat area. After a slight descent, note the remains of old trenches on the right. Climb again to a junction with a path leading off to the left (this will be the return route).
(3) Continue straight ahead and ignore a wide path branching off to the right (cross-country ski trail in winter). Climb steeply, winding your way past the remains of shelters (beams, sheet metal), go around a memorial on the right and reach the summit (a tall cross perched on a base of beams).
(4) Descend via the same path, pass the cross-country ski trail (on your left this time) and return to the fork.
Markings: Yellow Ring + Red-White-Red Rectangle
(3) Turn right onto the grassy path (signposted "Retour Col du Calvaire"). After about 100 metres, turn left onto a narrow path (be careful to spot this turn-off, as there is no arrow to indicate it in advance and the signpost is further along the path). Descend steeply, then follow a few hairpin bends. You will come out onto a wide path, which you follow to the left towards Le Bonhomme (signpost).
Yellow ring markings (+ green ring at the start)
(5) At the T-junction, turn left and continue on relatively flat ground. Stay on the main path, which quickly turns south-southwest. After a slight descent, take the left fork. Immediately cross a perpendicular path and continue south-west to a large crossroads in open terrain (information sign leaning against a rock).
Markings: Yellow Ring + Red Rectangle
(6) Continue straight ahead on a slight incline into the forest. Heading southwest, then west, then southwest again, stay on the main path and ignore any side paths. Pass under a ski lift line and then cross a wide grassy strip (ski slope). Leave the Tinfronce Refuge on your right and climb uphill. Pass under the high-voltage lines again and return to the starting car park (S/E).

very pleasant little loop, as described and in line with our expectations. Rating: 5/5