At medium height, the beech and fir forests, which will be followed by the black pine trees at high altitudes. Well above, where almost everything is already blue sky, we will travel through moraines, mountain lakes and the largest glacier in the mountain range, which still holds, on the north face of Pico Aneto.
With alpine feeling because of the ascent of the two highest peaks of the mountain range, Aneto (3404 mts.) And Posets (3375 mts.), Perdiguero or Gias can also be climb during this route.
As passing through high mountain terrain the use of crampons, ice axe and punctually the rope, are mandatory. The guide-client ratio must be reduced to 1–4, which will allow on the one hand to move with agility, and on the other, very personalised attention to each client.