Glarus
canton, east-central Switzerland, comprising the deep, level upper valley of the Linth River, which rises in the southwest in the glaciers of the Todi (11,857 feet [3,614 metres]), highest of the Glarus Alps, and flows north and northeast to the Walensee (lake). About 190 square miles of its area are classed as productive, including more than 50 square miles of forest. The Linth Valley is almost completely surrounded by high mountains, rising to 10,361 feet (3,158 metres) at the Hausstock and 9,560 feet (2,914 metres) at the Glarnisch.
Learn more about Glarus with a free trial on Britannica.com.