A short stage, although with quite a bit of elevation, that offers the possibility of deviating to climb some 3000.

From the shelter of the Soula, we climb the valley that opens to the East and ascends to Lake Caillauas. Following the valley, passing through other smaller lakes, we reach the Gourgs Blancs glacier, which we climb to reach the pass of the same name. If we wish, we can leave our backpacks here to climb one of the nearby peaks, Gour Blancs to the south or Spijeoles to the north among the main peaks.

From the pass, descend about 100 m to a basin; we cross it and climb another 100 m along the northern flank that descends from the Dera Baquo peaks. We follow the divide that leaves the frozen lake of the port of Oô to our left and the frozen lake of the Portillon to our right until we reach the Portillon refuge.