The Sustenhorn is a 3,503 metres high mountain

Mountain

Image:Himalaya_annotated.jpg|thumb|right|The Himalayan mountain range with Mount Everestrect 58 14 160 49 Chomo Lonzorect 200 28 335 52 Makalurect 378 24 566 45 Mount Everestrect 188 581 920 656 Tibetan Plateaurect 250 406 340 427 Rong River...

 in the Urner Alps

Urner Alps

The Urner Alps are a mountain range in central Switzerland in the western part of the Alps. They extend into the cantons of Obwalden, Valais, Lucerne, Bern, Uri and Nidwalden and are bordered by the Bernese Alps to the west, the Lepontine Alps to the south and the Glarus Alps to the east.The Urner...

, located on the border between the cantons of Bern and Uri

Canton of Uri

Uri is one of the 26 cantons of Switzerland and a founding member of the Swiss Confederation. It is located in Central Switzerland. The canton's territory covers the valley of the Reuss River between Lake Lucerne and the St. Gotthard Pass. German is the primary language spoken in Uri...

. It overlook Susten Pass

Susten Pass

Susten Pass is a mountain pass in the Swiss Alps. The pass road, built from 1938–1945, connects Innertkirchen in the canton of Bern with Wassen in the canton of Uri...

 from the south.

Both sides of the massif are glaciated. On the west side (Bern) lies the Stein Glacier

Stein Glacier

The Stein Glacier is a 4 km long glacier situated in the Urner Alps in the canton of Berne in Switzerland. In 1973 it had an area of 6.06 km².-External links:**...

and on the east side (Uri) lies the smaller Flachensteinfirn. The massif consists of several summits, the principal being Chli Sustenhorn (3,318 metres) on the north and Sustenlimihorn (3,316 metres) on the south.