Country:
City:
At the Croix de Saint-Bruno (956 m), leave the Sappey-en-Chartreuse road (D512) and take the road leading to Saint-Eynard. After passing through the hamlet of Gouillat, you will find a small car park at Pillonnières, at the start of the Bordelière path.
(S/E) Continue along the Saint-Eynard road southwards for about 600 m. Then take a path on the right at the edge of a clearing, which splits into two further on. Take the left-hand branch and you will soon rejoin the D57a, not far from a hairpin bend.
(1) A path starts from this bend. You may need to go around a few fallen trees before reaching the wooded ridge of Rocher du Bret. The trail then invites you to either follow its line or go slightly eastwards to avoid certain obstacles. Over the last few metres, it becomes slightly exposed as it opens up.
(2) After taking in the stunning views from the summit of Rocher du Bret, a good path quickly joins theGR®9to the south at a terrace. Follow it eastwards along a ditch that separates us from Fort du Saint-Eynard. Then, not far from its entrance, a narrow passage followed by a tunnel leads us to the panoramic terrace of Les Batteries.
(3) At the other end, continue to follow theGR® along the wooded ridge, which offers more breathtaking views. Leave the trail at Pas Guiguet, where there is a signpost (however, the name of the place is not indicated).
(4) Head down the wooded slope towards the north-west along an unmarked path, which is fairly inconspicuous at first but quickly becomes much clearer. It ends at a hairpin bend on the Route du Saint-Eynard, not far from a pylon.
(5) You will then find a yellow-marked path on the right, descending diagonally. It crosses a logging track before running alongside meadows and ending near the small car park at the starting point (S/E).
Visorando Member
Moderate 
