Take the Col d'Izoard road, cross the village of Font Christiane and at the next crossroads turn left onto the Fort de Têtes road. Park in the shooting range car park.
(S/E) Walk along the shooting range on your left, then take the path that crosses the Randouillet Fort track. Return to this track and turn left.
(1) Stay on this track to go around the fort and reach the Fort d'Anjou.
(2) Then take the wide path on the left, zigzagging through the forest until you reach the crossroads of the military road and the track leading to the Seyte barracks.
Cut across the latter via the path to reach the barracks.
(3) Leave the Clot de l'Infernet track on your left and continue on the right towards a large building. Continue south-east until you reach a hairpin bend.
(4) Take the path that leads to the old Cochette barracks.
(5) Take the path heading west towards Fort de l'Infernet.
(6) Descend via the wide track at the fort entrance to reach the aforementioned hairpin bend.
(4) Retrace your steps to return to the car park (S/E).