First, head to the starting point, where there is a small car park. From the traffic lights at La Festinière, follow the signs for Putteville. There are also signs for Pierre Percée.
(S/E) From the car park, follow a good path that climbs up to Pierre Percée. Ignore the first path on the right after a big bend.
(1) At the fork, take the path on the right and continue climbing. You will see the Pierre Percée higher up. Reach it.
(2) Once you have passed the Pierre Percée, climb up to the ridge.
(3) Take the path that descends to the right. At a fork, continue downhill to the right. Continue descending, first through the forest and then in open country, until you reach the Pierre-Châtel cemetery and then the church.
(4) After the church, take the small road on the left and continue in the same direction until you reach the departmental road.
(5) Cross the road and find a path on the other side that runs alongside a small canal, passes under the national road and leads to the Les Cordeliers campsite.
(6) When you reach the campsite entrance, turn right, cross the canal, then turn left and enter the car park. You will reach the lake via a large meadow, which is a lovely spot for a picnic, with tables and benches available. Continue along the lake shore, then take a small path that leads back to a wide track.
(7) Take the path on the left and continue north to the hamlet of Les Théneaux.
(8) At the chapel, turn right, a little further on cross a small road, pass close to the Les Mouettes campsite, and continue on the path that overlooks Lake Pétichet for a while.
(9) Turn left and join the small departmental road, then follow this road to the right until you reach the N85 national road. Cross this road and follow it for about 100 metres towards Grenoble, passing alongside a large building.
(10) Just after the building, take the path that branches off to the left and begins a steep climb southwards. Continue climbing in the same direction, ignoring the paths to the left and right. After about a kilometre, the path becomes a track and continues in the same direction, following the contour line.
(11) At the intersection, climb to the right in a north-westerly direction until you reach the ridge path at Bois de Paraillat.
(12) Turn left and head south again. The track follows the ridge line and leads to the Pierre Percée site. Enjoy the panoramic view once more.
(2) Pass in front of Pierre Percée and return to the starting point via the uphill path (S/E).