Zügen Gorge, Mountain canyon in Grisons, Switzerland.

Zügen Gorge is a canyon in the Graubünden Alps that cuts through limestone rock, with walls that rise steeply on both sides of a narrow passage. The exposed layers of stone tell the geological story of the mountain range.

The gorge formed during the last ice age when glaciers carved through the rock over thousands of years, creating the deep valley visible today. This glacial work shaped the landscape that visitors now experience.

The old Zügenstrasse through the gorge, built in the 19th century, is signposted as a geological teaching trail and open to hikers from spring to autumn. The trail runs between Schmelzboden and Davos Wiesen along the Landwasser; the walk takes about two hours. Railway enthusiasts photograph trains on the ten-metre Bärentritt bridge, often from the viewpoint on the old road.

You can reach the gorge via marked trails from Davos that are open year-round in good conditions. Wear sturdy footwear and take care on wet or icy sections of the path.

The Bärentritt bridge, only ten metres long, carries the Rhaetian Railway line briefly into daylight between two tunnels; beneath it the Brüggentobelbach plunges over the Bärentritt falls into the Landwasser. Photographers often use the viewpoint on the old Zügen road.