The
Glarus Alps (German:
Glarner Alpen) are a mountain range in central Switzerland. They are bordered by the Uri Alps and the Schwyz Alps to the west, the
Lepontine Alps 
to the south, the
Appenzell Alps 
to the northeast. The eastern part of the Glarus Alps contains a major thrust fault that was declared a geologic UNESCO World Heritage Site (the Swiss Tectonic Arena Sardona).
The Glarus Alps extend well beyond the
Canton of Glarus 
, including parts of the cantons of Uri, Graubünden, and St Gallen. Conversely, not all the mountains in the canton of Glarus are part of the Glarus Alps, with those to the north of the Urner Boden and to the west of the valley of the river Linth considered to be part of the Schwyz Alps.
Geography
The main chain of the Glarus Alps can be divided into six minor groups, separated from each other by passes, the lowest of which exceeds 7,500 ft.