The car park is located on the D91 road, very close to Moulin des Roches.
(S/E) Take the path that leads away from the road and is marked by the signpost "Route de Cernay".
(1) Follow the path on the right that goes uphill.
(2) Leave the main path and take the second path on the right. The plot number "18" is marked on a tree. 100 metres further on, take a path on the right that climbs very steeply. At the top of the hill, continue straight ahead and keep heading east-southeast.
When you reach the D149 coming from Senlisse, go through a forest gate, cross the road and turn right onto the D906.
(3) Turn left towards Chevreuse and follow the road carefully for about 150 metres, then take a path on the left and go through a forest gate. Pass a small sewage treatment plant on your left and walk alongside the fields on your right.
(4) At the boundary marker, turn slightly left onto the path that does not descend. Be careful, as it can be particularly muddy. Cross a wood where you can admire some very old chestnut trees and join the Côte Brûlée forest road.
(5) Turn left and continue down the gentle slope of this forest road. Cross several paths, one of which is marked with a sign saying "Les Maréchaux". Continue to the D149.
(6) Cross the road carefully, passing through the forest road barriers. Continue on the path opposite, which is marked by a sign for "Route forestière de Bois Boisseau". At the next junction, continue straight ahead.
(2) Turn right towards the Bouillons farm. Then take the first path on the left.
(1) Continue on the right to return to the car park (S/E).
