Park near the Roussiveau forest house.
(S/E) Head north on the Castelli path and cross the Sigallon bridge. Continue to a new bridge.
(1) Just before this bridge, take the path on the right that runs alongside a stream (dry in summer). Reach the ford.
(2) Cross the ford and take the path opposite, following the stream on its left bank. After a short climb, you will reach a crossroads.
(3) Turn right and follow it to reach Baisse des Charretiers.
(4) Descend the track on the right for a few metres and take the track on the left that descends towards Vallon du Maraval. You will come to another crossroads.
(5) Turn right, cross the first bridge and then the Pigeonnier bridge.
(6) Continue downhill along the stream, cross several bridges and arrive at the Cantines bridge.
(7) Stay on the trail, make a large circular loop in the Perthus ravine, then take the wide bends to reach the Pont du Perthus bridge.
(8) Turn right onto the tarmac road (closed to traffic) towards the Roussiveau forest house. Follow the path back to this house and the starting car park (S/E).

