The two largest glaciers on the massif (Tsanfleuron and Diablerets) are both on the Valais side. They form a single inclined plane towards the east, although they are separated by the rocky summit of Le Dôme (2,986 m), which lies just east of the main summit. They are not very steep, especially the Tsanfleuron Glacier, as the rock strata are close to horizontal. The smaller and higher Diablerets Glacier, however, is much wilder than the Tsanfleuron Glacier as it is steeper and more crevassed. The Tsanfleuron plateau, between Le Dôme and the Sanetsch Pass is only partly glaciated. Below 2,600 m is a large karst zone, called Lapis de Tsanfleuron and covering an area of about .