Park near the war memorial on Rue Pierre Gosselin (near the ruins of Robert the Devil's Castle).
(S/E) With your back to the war memorial, head towards the motorway bridge.
Turn right just before the bridge to admire the ruins of Robert the Devil's castle. Access is free, but be aware of the site's opening hours (check online).
(1) After visiting the ruins, retrace your steps and turn right to pass under the motorway bridge. A little further on, turn right onto Route Forestière du Château Robert. Follow this road for 600 metres.
(2) At Carrefour Robert, turn left. Pass under a railway bridge, then continue to the left. 500 m further on, pass under another railway bridge and continue on the same road.
(3) Pass under the 17-pillar viaduct (made of red Infreville bricks) and turn left at the foot of it. The path runs alongside the viaduct, then climbs into the forest. At the top, turn right, then right again to follow the old railway line. Continue for 100 metres after the railway bridge.
(4) Turn right onto the forest path (marked by an old concrete marker). Follow this path to the end, then continue on the path opposite. Ignore a path that climbs to the left and continue for about 400 metres until you reach a small bridge with metal railings (be careful not to go past it).
(5) At this small bridge, leave the path by going around the left-hand railing. Now take theGR®2. Go up this path, turning left. At the next junction, take thesecond path on the right to continue following theGR®2. After a steep hill, continue to a small tarmac road. Take a few steps to the right, then follow the path on the left that leads into the woods. At the end of the path, turn right, still on theGR®, towards Mare Lecomte.
(6) 20 metres before the tarmac road, continue left on theGR®2(note that the entrance to the path is not very visible). Go down a steep slope and, at the bottom, follow the forest path on the left. Continue along this path for 1.8 km until you reach the Hêtre à l'Image crossroads.
(7) At this crossroads, turn left and then immediately left again onto the path that climbs through the undergrowth. At the end of the path, opposite, there is a gate overgrown with vegetation. A passage to the right of the gate leads to the old railway line. Cross the tracks and follow the path opposite. This descends to the Route Forestière du Mont à la Chèvre. Turn left onto this road. Pass thefirst path on the left, then a few metres further on, at the Carrefour du Mont à la Chèvre, turn left. In the large right-hand bend, pass in front of the memorial, then go under the railway line.
(8) At the Carrefour des Viaducs, take thesecond tarmac road on the left. Cross the D64 and continue on the tarmac road that climbs opposite. At the crossroads, turn left, then right to pass under the A13 motorway. Continue for about 100 m after the tunnel under the motorway.
(9) Follow the road to the left. A few metres further on, at the fork in the road, take the road opposite and descend to the D 67a departmental road. Take this road to the left for 100 metres, then take thefirst street on the right (Avenue Jean de la Varende). Continue straight on until you reach the road (D3).
(10) Turn left and go up the D3. 500 m after the church, take the Chemin des Fontaines on the left. At the entrance to the woods, follow the GR 2 which goes up opposite, then turn left at the road to return to the starting point (S/E).
