See the approach to Monte Perdido.
Start point: all the routes for Monte Perdido.
From all the routes for climb to Monte Perdido (except Las Escaleras of course) we arrive to the Pequeño Lago Helado (little ice lake) under the Monte Perdido, near the Col of Cilindro. In this point we turn to the left in direction to shoulder SO of Cilindro. We will come to the base of wall-chimney of grade II+ of 20 meters (or another chimney in the left side, a bit less exposed, specially in the descent). Generally is neccesary a rope for descent this chimney (and for the ascent according to the experience of each one) and though there is a rope placed in the place, it is better to take the own one for major safety (you don't know all the time it takes there and what can last). The rest is an easy and nice ascension for the crest up to the hill of the summit with a marvel view of Monte Perdido.
Approximate time to summit: from Ordesa (7h), from Góriz (3h30min), from Bujaruelo (5h30min), from Pineta (7h).
Normal route: Corredor del Lago Helado.
Others routes: Balcón de Pineta.
Generally a rope of 30 meters and harness. In winter crampons and ice axe (you can leave the weight before the chimney in the ground).