Park in the Col de la Ligne car park.
(S/E) Cross the D15 and take (north-west) an unmarked track that descends into the Puits Vieux valley. Descend this valley to the D5 road, turn left and follow the road to the Sainte-Foi sign and reach the chapel.
(1) Continue along the path in front of the chapel and, after a first left turn and a second right turn, you will reach theGR®91A.
(2) Follow the red and white markedGR® trail, which climbs back up and crosses the D5, passing close to the Alleman farm. Be careful of flocks of sheep in the area and sheepdogs roaming free outside the park. Continue climbing to Pas du Viguier.
(3) Head east towards Saint-Hubert, then continue following theGR® to the Coulet de Charreau sign.
(4) Leave theGR® and head south-east on a path signposted Lausemolan. Arrive at the Lausemolan farm: a remarkable vestige of a 17th-century farm, then head towards the rain water reservoir carved into rock of the Jaille and reach it.
(5) Take a wide track (be careful, there are many turnings to the left and right) heading south-south-west towards the Fillol farm, leave the farm on your right and join the Route Forestière des Indochinois.
(6) Take this road heading north-west and follow it for about 2.3 km, passing six fairly sharp bends, go past the Les Indochinois sign and arrive at a crossroads with the road (elevation 729).
(7) Take the track on the left through the forest and join theGRP® Sentier Historique du Mur de la Peste. Take it to the left to quickly reach the Col de la Ligne car park. Follow this track south, enjoying the scenery, and arrive at the starting car park (S/E).
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