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 name Crispalt is given to a southern, but secondary, peak of Piz Giuv, measuring 3,070 m. West of the main group is the Rienzenstock, while a northern outlier culminates in the Bristen.

The crest of the snowy range connecting the Oberalpstock with the Tödi nowhere sinks to 9,000 feet, but makes a sweep convex to the north, forming a semicircular recess, whose numerous torrents are all poured into the Rhine through the Val Russein below Disentis.

[1] The Tödi, the highest of the range and of north-eastern Switzerland (3,614 m), is attended by numerous secondary peaks that arise from the extensive snow-fields surrounding the central mountain.

A very considerable outlyer, whose chief summits are the Schärhorn and the Gross Windgällen, belonging to the canton of Uri, is connected with the Tödi by the range of the Clariden Grat, north to the Hüfi Glacier.