Sigmund-Thun-Klamm, Zell am See (must see)

Sigmund Thun Gorge is one the famous hiking destinations in Kaprun. The narrow gorge formed 14,000 years ago, after the glacier that covered Kaprun melted, making room for the Ache of Kaprun river to run between the rocks. In 1890, Nikolaus Gassner, a Kaprun pioneer, established a path through the gorge to the Mooserboden reservoir, and three years later here was raised a 340-meter wooden catwalk, designed by Nicholas Gasson, making it easier and safer to walk through. It was named after the governor of Salzburg, Sigmund Graf von Thun. In 1934, the gorge was declared a natural monument. It was closed after WWII, and fully reopened for tourism only in 1992. Sigmund Thun Gorge is highly popular with family groups, being very safe for children, yet never losing the edgy grandeur of nature. The gorge is part of a popular hiking trail that goes through the gorge, leading it to the Klammsee lake, continuing to the Kaprun Cable station and further on to the Mooserboden reservoir.