This excursion across the Cambasque Plateau, accessible by the cable car from Lys, takes you up to Cirque du Lys Ridge (2,303m/7,555ft), commanding a superb panorama of the finest Pyrenean summits: the Pic du Midi de Bigorre, Vignemale and Balaïtous (viewpoint indicator). Ilhéou Lake can be reached in 1 hour along the marked trail.