Park at the Col de Palomère.
(S/E) From the pass, head south along the track that climbs until you reach a junction.
(1) Ignore the sign indicating you should continue along the track towards the Pinouse mines and take the path that climbs to the left. The climb is steep and joins the old Rapalum/Formentère railway line.
(2) Follow the old railway line to the right. This section is very peaceful and leads to another junction.
(3) Continue along the track opposite and keep strolling along this old railway line, which leads to the old Rapalum mining station.
(4) Take the path that goes downhill, but this is just to make the climb back up easier. Indeed, some sections of this stretch will be steep. The reward will be there once you arrive at the Pinouse mining site.
(5) Follow the path back in the opposite direction to return to the Col de Palomère (S/E).