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Car park located behind Poleymieux church.
(S/E) When you leave the car park, behind the church, take Chemin de Nerbey, the road that branches off to the right. At the first intersection, continue straight ahead. You will pass the cemetery, and the paved road will turn into a dirt road. Along the way, a sign will introduce you to the drystone shelters, which are amazing stone huts that you will find along this route. Ignore the path that branches off to the right and then to the left (an interesting drystone shelter can be seen at this point).
(1) Leave the path that curves to the left. After 50 metres, you will come to another path; take it to the left. There are more drystone shelters with interesting information panels along this path. Continue straight ahead on this path, which climbs gently before crossing a road. Cross the road and continue on the path opposite for 50 metres until you reach Rue de la Croix Rampau, which you take on the right.
(2) Under the Tour Rister, there is a small square with an iron cross and information panels describing the Mont d'Or geological trail. Take the path on the left of the panels. When you reach the crossroads, take the road on the right (Chemin du Pavillon). Continue straight ahead on this road, which climbs gently through the woods until you reach a place called Le Pavillon. At this building, on the left, a narrower path climbs through the boxwood trees. At the first intersection, turn left, following the markers for the geological trail. The path quickly leads to a small road that serves the highly sensitive communications facilities of the air base. Continue along this road.
(3) At the bend, take the path that descends opposite, into the forest (marked with geological trail markers). The path descends through the woods. In wet weather, it can be very slippery. Ignore the path that branches off to the right into the meadow and then the path that branches off to the right.
(4) Leave the geological trail and take the narrow path that branches off to the left of a ruined house. The relatively unused path leads to a road.
(5) Take the road to the left. After the second bend, you will see the old lime kiln, which has been beautifully restored. Clear signs explain how it worked.
(6) Leave the road and take the path on the right towards the beautiful Glande farm. The path turns into a trail. Dominated by the BA942 radome, it leads you to the RD92.
(7) Take the D92 road to the left. You can make a small detour to visit the Carrières battery. The D92 winds through the countryside to the pass and crossroads at cote 585.
(8) The road on the left leads to the highly sensitive defence zone of Fort de Mont Verdun.
Take the very steep but passable path created by mountain bikers, which descends straight through the forest. When you reach a wider path, turn right. The mountain bike trail quickly reappears on your left (with a tree stump just to the right). The trail leads you to a military road (you will see the air base enclosure on your left). Cross it and continue straight downhill.
(9) You will come to a path. Take it to the left. At the end of a meadow, you will arrive on the D73. Continue on the road to the left, downhill towards the village of Poleymieux. Stay on the main road. You will arrive in front of the Ampère Museum, which you can visit at weekends (opening hours below). At the traffic lights, after the statue of Ampère, take the road that goes up to the left.
(10) After the first bend, there are steps going up on the right. Follow them. Take the street to the left and you will quickly return to your starting point (S/E).
" with a tree stump just to the right": the stump is now almost completely covered by brambles and is difficult to see.
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