The hike starts at a place called Essart Garin.
(S/E) Cross the Gresse torrent and immediately turn right, walking alongside a vineyard. A little further on, the trail crosses the Ruisseau Verdant, either by fording it or via a very original footbridge.
The trail climbs into the forest, passes under power lines several times and reaches a place called Le Plan, not far from the hamlet of Saint-Barthélemy in the commune of Le Gua.
(1) Continue straight ahead on the path through the field until you reach the D8. Cross it, continuing in the direction of Miribel-Lanchâtre.
(2) Take the road on the left and descend to the departmental road. Follow it uphill for about 400 metres until you reach a bend with a small car park on the left and an information panel about the Fontaine Ardente site.
(3) Take the path on the left that descends to the Fontaine Ardente site.
(4) Go back up the same path to the road and continue on the left to the hamlet of Cassoulet.
(5) At the entrance to the hamlet, turn left onto a small road towards Miribel and cross the stream of the same name.
(6) Take the path on the left which descends, passing under power lines again, and return to the starting point (S/E).