Sigmund-Thun-Klamm

The Sigmund-Thun-Klamm is a narrow gorge cut by the Kapruner Ache through hard rock. It lies in the Kaprun municipality within the Hohe Tauern range. The gorge reaches depths of up to thirty-two metres and stretches three hundred and twenty metres long. Its walls were shaped by meltwater from several glaciers during the last Ice Age. The gorge takes its name from Sigmund von Thun-Hohenstein, who once served as Salzburg’s governor.

The path through the gorge is built on wooden walkways that wind between towering rock faces. Visitors follow the course of the Kapruner Ache, which roars below on its way down from the glaciers. At the end of the gorge stands the Bürgsperre dam, which holds back the green waters of the Klammsee. The walk is only open from late spring to early autumn when snow and ice have melted.

The route offers close-up views of dark rock walls and the rushing stream. Sunlight filters through the narrow opening above, casting shifting patterns on the water. At the dam, the Klammsee reflects the surrounding peaks and the dam itself. The contrast between the confined gorge and the open lake at its end makes the walk memorable.