Nestled near Kaprun in the Salzburg region of Austria, the Sigmund Thun Klamm is an enchanting gorge carved by the Kapruner Ache river. Stretching 320?m in length and plunging up to 32?m deep, this dramatic natural corridor is an unforgettable blend of rock, water, and wilderness .
A Walk Through Time and Stone
Formed during the last Ice Age and sculpted by centuries of glacial meltwater, the gorge is a geological marvel. Its narrow channel, steep walls, swirling pools, and polished rock formations bear witness to nature’s raw power . Wooden boardwalks and footbridges, built into the sides of the gorge, allow visitors to walk just above the roaring water—immersing in the elemental force of the river below .
Easy & Family-Friendly Route
- Trail length: Around 30 minutes through the gorge, plus a 1.8?km circuit around the adjacent Klammsee reservoir for a complete half-day outing .
- Accessibility: Although suitable for families and safe, the trail includes steps and is not accessible for wheelchairs or strollers .
- Protected from weather: Overhead roofing shields visitors during rain, making the gorge an ideal excursion even on damp days .
End at the Klammsee Reservoir
The gorge culminates at the serene Klammsee, a turquoise reservoir created by the Bürgsperre dam. Here, you can stroll the lakeside circuit, dip your feet in the frigid water at the Kneipp facility, explore a small playground, and grab a snack or drink at the lakeside café—perfect for unwinding after the gorge trek .
A Glimpse of History
- First accessible in 1893, with wooden walkways crafted by Nikolaus Gaßner.
- Named after Sigmund von Thun-Hohenstein, then Governor of Salzburg, who famously declared, “Thunderous and mighty the torrents flow towards us.”
- Declared a natural monument in 1934, though footbridges were later removed for hydroelectric projects. They were reconstructed in the early 1990s
Amplify your cultural journey with a visit to the nearby Kaprun Museum, housed in a 400-year-old farmhouse, which delves into regional history and the gorge’s legacy
Practical Information
- Opening Hours (2025):
- 9 May–30 June & 1–30 September: 09:00–17:30
- 1 July–31 August: 09:00–19:00
- 1 October–2 November: 09:00–15:30
- Entrance Fee: ~€7.50 for adults; children ~€5.40. Free entry for holders of the Zell am See–Kaprun or SalzburgerLand Summer Card
- Parking & Access: Several free parking lots are located at the entrance. Public transport options include bus 660 via Zell am See; from the Tauernplatz stop, it’s a 10–15-minute walk
- Tip: Arriving early grants a peaceful, misty ambiance and fewer crowds .
Seasonal & Evening Events
The gorge transforms at dusk with magical events during summer:
- Gorgeous Lights: Fridays from mid-June to late October, gorge illuminated by colorful lights—entrance ~€20 (adults), €10 (children)
- Mystical Night of Water: Mondays in July–August, torchlit guided walks ending with campfires and refreshments—~€10 (adults), €5 (children)
- Gorge Breakfast: Early morning Thursdays (June–September), dine surrounded by mist and cascading water at ~08:30 am
Why It Captivates Visitors
- Natural Splendor: Experience a rare connection to dynamic mountain water and ancient rock formations.
- Ever-Changing Landscape: Seasonal meltwater reshapes the gorge year-round, creating fresh viewing angles .
- Cool Refuge in Hot Months: The gorge maintains a refreshingly cool climate—an ideal retreat during summer heat waves .
- Interactive Discovery: Educational trail stations pepper the route, offering insights into geology, hydrology, and local lore .
- Family-Friendly Appeal: Safe, moderately paced walking paths with elements of fun—perfect for all ages .
Expert Tips for Visitors
- Dress smart: Bring layers and moisture-resistant clothing—temperatures drop within the gorge, and boardwalks may be damp.
- Footwear: Choose sturdy shoes for wet surfaces, especially during evening events.
- Book ahead: Evening events fill up quickly; grab slots online in advance.
- Combine your trip: Pair the gorge outing with glacier mountain trips, spa visits, or Kitzsteinhorn glacier runs in Kaprun/Zell am See.
- Capture the moment: Mornings offer ethereal light—ideal for photography.
Final Thoughts
Sigmund Thun Klamm is not just a gorge—it’s an immersive journey through time, water, and wilderness that showcases Austria’s Alpine heart. Whether you’re drawn to its geological majesty, seasonal drama, or magical evening atmospheres, this gorge offers a rich, sensory delight. It’s a must-visit natural spectacle when exploring the beauty of Salzburg’s alpine landscapes.
For your next trip to Austria, plan an exciting half-day (or more) around nature, heritage, and family-friendly exploration at Sigmund Thun Klamm—a true highlight in a beautiful country.
