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From Saint-Girons, head towards Castillon-en-Cousseran on the D618, then take the D4 towards Bonac-Irazein. Before you get there, turn left onto the D704a and continue to the end at Granges des Écharts.
(S/E) From the Pucelle car park, take theGR® trail that climbs to the left. The trail climbs gradually in the shade of the trees. At thefirst intersection, continue straight ahead at the bottom of the valley.
(1) Take theGR®10, which climbs to the left into a small mountain pasture before returning to the forest. The climb begins with numerous hairpin bends.
When you reach theGRP® Tour du Biros, take it to the left for about 10 metres.
(2) Take thesecond path on the right (GR®10), which continues to climb in hairpin bends through the forest before reaching the mountain pasture.
(3) When you reach the Besset hut, go around it on the right and continue straight up. Follow theGR® trail that climbs up into the mountain pasture.
(4) When you reach the Clot du Lac hut, continue climbing to the pass (altitude 1,826 m).
From there, there is no longer a path, but the summit is visible on your left (as you climb), so all you have to do is finish your ascent to the summit.
(5) Tuc du Coucou (stone on the summit) to enjoy the 360° panorama.
Return via the same route to the car park (S/E).
Visorando member
Difficult 
Very difficult 
