Old Verrucano rocks lie directly on the thin Lochsite limestone band and the younger Flysch rocks. Towards the Calfeisental and above Flims there are glaciers that have lost considerable length and volume in recent years. Beautiful moraines, glacial formations and fields of scree are now visible where the ice once was. The summit can be climbed from various starting points. A medium-difficult alpine tour starts from the SAC Sardona hut. The ascent over the Sardona glacier with a short climb below the summit takes about 3.5 hours (900 metres of elevation gain) from the hut.