The start is at a small, clearly marked car park on the Route Forestière des Baschassons. This is a round-trip walk.
(S/E) Take the path opposite the car park, heading east at the start. The path then turns north.
(1) Carry on straight ahead at the junction, heading east.
(2) At the fork in the road, keep right, heading due east.
(3) Ignore a path on the left further on.
(4) Junction with the GR®91; follow it straight on towards the east at the start, then due south.
(5) Jasse du Play mountain hut (alt. 1624 m). Continue along the GR®.
(6) After the monument, leave the GR®91 and take a path on the left, following the stone cairns. There are no further signposts, but the path is clearly marked, except on the few areas of sharp limestone pavement.
(7) Pas de Berrièves (alt. 1,887 m) and its Lorraine Cross. Return to the car park via the same route as on the way there (S/E).