Tags: Mountain Range.
The Glarus Alps are a mountain range in central Switzerland. They extend from the Oberalp Pass to the Klausen Pass and are bordered by the Urner Alps to the west the Lepontine Alps to the south and the Appenzell Alps to the northeast. The eastern part of the Glarus Alps contains a major thrust fault which was declared a geologic UNESCO world heritage site (the Swiss Tectonic Arena Sardona).