(S) Departure from the Vicdessos Tourist Office square.
(1) Cross the bridge and turn right onto the road that climbs towards Goulier (D208).
(2) After the first hairpin bend, take the path on the right of the road. A little further on, cross the road and climb a staircase carved into the embankment. Follow the path heading east as it climbs into the forest. Cross the road twice and you will reach a small pass from where you can make a detour to the Palet de Sanson, also known as the "Dolmen": a beautiful viewpoint over the valley.
(3) From the pass, there are two roads leading towards Sem: do not take the one that goes straight down (north then east), but take the one on the right (D208, east-southeast).
(4) At the entrance to the village car park, turn left towards the church. Do not enter the village but turn right and follow the stream on its right bank.
On the descent from Sem, at Place du Minier, you can take the path marked "Trémie et Poudrière" to discover the mining activities (returning along the same route).
Then take the historic paved path that mule drivers used to take to bring the ore down to Cabre. Cross several footbridges over the stream. At the waterfalls, the path winds down to the D8. Cross this road and take the road opposite that leads to Arconac.
(5) Cross the bridge to reach the village of Arconac. Cross the village and follow the D708A to Vicdessos.
(6) Near the church, turn left into Rue de l'Église, then right to return to the car park (E).