Sigmund-Thun-Klamm, Natural canyon in Kaprun, Austria
The Sigmund-Thun-Klamm is a narrow slot canyon carved through limestone, extending 320 meters with depths reaching 30 meters at its narrowest points. Water rushes through the passages, having worn the rock over thousands of years.
The canyon took shape roughly 14,000 years ago when Ice Age glacial meltwater carved deep channels into the surrounding mountains. This ongoing process of water erosion continues to shape the landscape visitors see today.
The gorge takes its name from Count Sigmund von Thun, a Salzburg governor who witnessed the torrential waters here in 1893. Visitors today walk through the same passages, connecting directly with the natural force that impressed him.
Wooden walkways and bridges guide visitors safely through the canyon on a route that takes about 30 minutes to complete. The ground can be wet and slippery, so sturdy shoes are essential for comfortable walking.
On summer evenings, colored lights illuminate the canyon walls and flowing water, casting shifting patterns across the natural rock formations. This evening display transforms the gorge and reveals details of the landscape that daylight alone would not show.
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