To reach the starting point, from the D181, take the Rombas exit, keep right at the roundabout and turn right again at the next crossroads. Pass under the D181 and the starting point is behind the Rombas football stadium (Fond-Saint-Martin Leisure Area).
(S/E) Pass between the small pond and the tourist office and head towards the outdoor exercise equipment. Continue along the path to the left of the equipment. Follow the blue round markings.
(1) Pass the equestrian centre below and turn right at the three-way junction. Enter the forest on a sloping path. Pass under a power line and then leave theGR®5.
(2) After passing hillsides covered with wild garlic, turn onto a small path on the left, crossing the slope known as "Chevitue". Continue for 1.8 km to the foot of the climb leading to the Drince Tower.
(3) Turn right to rejoin theGR®5on the fairly steep zigzag path that leads directly to the tower.
(4) Continue along this path, which follows the heights of the Côte de Drince. You will reach marker 5 of the Office National des Forêts.
(5) Leave theGR® here and turn right onto the straight downhill slope to the valley.
(6) Turn right when the descent is no longer possible. Continue to a fork with three possible paths. Take the middle path and continue to Les Roches.
(7) Climb up the steep slope on the right to this prehistoric site.
Return to the main path and continue to the right until you reach a fork under a power line. Turn left, then right at the next hairpin bend to reach the leisure centre and the lake.
(8) Walk along the lake to return to the Rombas stadium car park (S/E).

