A stage with a significant positive gradient that passes through one of the most impressive landscapes in the whole Pyrenees: the Gaube valley and the imposing north face of the Vignemale.

From the Wallon refuge, head towards the Aratille pass through the Aratille lake. Snow in early summer.

Then we follow the Collado de Mulets and descend a long way to the refuge of Oulettes de Gaube. From here, head southeast towards the Ourquette de Ossoue, one of the highest passes of the traverse. Here we can leave our backpacks and approach the summit of the Petit Vignemale (3032 m). The views over the Osseau glacier are worth seeing. From here, a short descent brings us to the refuge of Baysselance, the highest refuge in the Pyrenees.