From Luz-Saint-Sauveur, head up the D918 towards Barèges, then turn right straight away towards Aste and Villenave onto the D146. Follow the road, which turns into a track for several kilometres, ignoring any junctions. The track climbs through the forest and then into the mountain pastures.
Park on the right-hand side of the road at a hairpin bend near the barns (Estibe area, see IGN map) at an altitude of around 1,461 metres. (See also the ‘Practical Information’ section).
(S/E) From the car park, follow the track uphill for about a hundred metres.
(1) Turn right onto the grassy path marked by a yellow sign. The path climbs diagonally, skirting the mountain pastures of the Yse Valley, and joins the end of the sheep track.
(2) Follow the track to the right for a few metres, then turn left into the lane (stone wall).
(3) A little further on, you’ll come to a junction not shown on the IGN map. Let the path leading to the Barradé sheepfold branch off to the right at right angles and carry straight on. “Markings on a slab on the ground”.
The lane, which temporarily becomes a footpath, climbs up the hillside beneath the Pic de Bergons, winding twice before reaching the Bachebirou hut.
(4) Turn right, then head up the western ridge to reach the vast summit area of the Pic de Bergons
(5) For the return journey, follow the same route as on the way out back to the car park (S/E).