Start from the Chasselay Pond car park.
(S/E) Take Rue de l’Étang uphill. At the first junction, turn left. You’ll reach Rue des Darbonnières; follow it to the right. Then take thefirst dirt track on the left. At the T-junction, follow the Chemin de la Forêt to the right
(1) At a junction in the woodland, take the path on the left that leads uphill. The path soon turns right: continue southwards, ignoring the paths to the right and left.
(2) At a Fork in the road, veer to the right. At the next junction, turn right towards La Madone. Once you arrive, leave La Madone behind you and head up to the right, following a track. Join a path and follow it to the right.
(3) At a fork in the road, follow the path on the left. Take several hairpin bends and ignore the side tracks. At a T-junction with a V-shaped tree, turn left.
(4) At the next junction, turn left. Follow the path towards La Colas, ignoring a path branching off to the left. A little further on, you’ll reach the Chemin de Chasselay (marker 403 on the IGN map) and follow it to the right towards Poleymieux.
(5) About 150 m further on, take a short detour to the Ermitage Saint-Antoine and the Serminon tanning pit.
(5) Continue along the path towards the east. You’ll come out onto a tarmac road; follow it to the left. At the Y-junction, turn right towards Mont Py. Carry on straight ahead (south-west), ignoring the side paths. At the end of the path, veer to the right and you’ll immediately reach a crossroads.
(6) Take the path between the ‘military ground’ sign and the ‘Stop’ sign.
You’ll reach the Croix du Mont Verdun (rest area) and follow the road on the right towards Limonest.
(7) After about a hundred metres, take a path on the left marked by a large stone. At a three-way junction, turn right and head downhill. At the next junction, turn right towards the Gîte de la Glande. Walk past the lodge and continue until you reach a road.
(8) Follow the road to the left towards Limonest. About 150 metres further on, you’ll pass an old lime kiln (well worth a visit). Continue along the road towards Limonest.
(9) At the start ofthe second left-hand bend, leave the road and take a path on the right (marked for mountain biking). Head downhill and, at the junction at the bottom, veer to the right. At the next junction, which comes shortly afterwards, turn right.
(10) At the next junction, turn left onto the geological trail towards Chasselay. Follow this trail, heading north-north-west or north depending on the section, and ignore the offshoots on the left.
(11) At the three-way junction, turn left. Head straight on (north) and pass the buildings. Just before Rue du Promenoir, turn right onto Rue de l’Étang and you’ll immediately reach the car park (S/E).