Geopark Sardona

Piz Sardona is a mountain in the Glarus Alps, on the border between the cantons Glarus and St. Gallen. The 3,056 metre high mountain overlooks the valleys of Elm and Calfeisen. Less than one kilometre south of the summit lies the tripoint between the cantons of Glarus, St. Gallen and Graubünden. The summit itself is the northernmost point above 3,000 metres in Switzerland.

The massif is covered by a few small glaciers, the Sardonagletscher lying near the summit on the east side.

Piz Sardona is in the Glarus thrust area, a geologic UNESCO world heritage site, named "Swiss Tectonic Arena Sardona".