Leave the small town of Fons-outre-Gardon via the D907. At a bend in the D907, take the small access road to a quarry that is still in operation. Signs indicate a 30 km/h speed limit, speed bumps and the direction to Polycor. Watch out for heavily laden lorries as the road is narrow. On the left, an unpaved track forms a three-way junction with the road. Park at the start of the unpaved track.
(S/E) Start the walk by following this track. Walk past some houses. You’ll reach a Y-shaped junction.
(1) Continue straight ahead along the path, which climbs slightly. Pass a house and its garden. Continue climbing, following the wide track and the Vallon des Plaines, until you reach theGR®63.
(2) Turn right onto it and ignore thefirst few junctions until you reach a four-way junction after Puech Balaru.
(3) Leave theGR® here and turn left onto the ascending track. Follow it to reach an unnamed pass.
(4) Leave the track straight ahead and take a small path to the right. Enter the woods, join theGR® and cross it to continue straight ahead. Carry on to the junction with the access path to the old Roman quarry.
(5) Turn right, following the signposts, to reach and visit this site. Look out over the quarry, then head down towards an old stonemasons’ shelter.
(6) Do not climb back up using the rope but return via the same route to the previous junction.
(5) Take the path on the right and continue through the woodland. You will reach a crossroads of tracks.
(7) Take the track opposite, turn immediately right and you will then reach the Mont Mounier watchtower.
(8) Head back down, using a circular loop around the watchtower to return to the previous junction.
(7) Turn left onto the wide path; at the next fork, turn left again at the hairpin bend onto the road leading to the active TM34Omya quarry.
Please note: the road on the right leading to this quarry is closed to traffic.
Continue straight on, passing the old Lens quarry, then go past a wide track on the right leading to the Polycor quarry, which is also in operation. Continue for another hundred metres or so along this road until you reach a path junction.
(9) Take the path to the right, then turn immediately left. Climb slightly, then head back towards the initial crossroads you passed on the way out.
(1) Turn left and retrace your steps along the route you took on the way there to return to the car park (S/E).