The summit of Roche Jaille is almost the highest peak of the route. At an altitude of 2,690 m, it offers a view of the surrounding mythical summits with Mont Blanc to the north, the highest peak of the Alps (4,855 m) and the Meije to the south (3,984 m). Closer to the west, the Grand Perron des Encombres (2,824 m) is home to a population of alpine ibex.