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Schwammhöhe – Klöntalersee Geology Hike

Discovering glacial landscapes above the turquoise waters of Klöntalersee


This guided geology hike above the Klöntalersee in the Swiss Alps explores how ice, rock, and water shaped one of the most impressive alpine landscapes in the canton of Glarus, Switzerland. Following forest trails and mountain paths toward the Schwammhöhe viewpoint, we discover how glaciers carved the Löntsch Valley and how the landscape continues to evolve today. Along the way, spectacular views open toward the deep-blue waters of the Klöntalersee and the surrounding alpine peaks.


The Glacial Geology of Klöntalersee and the Löntsch Valley

The Klöntal region is a textbook example of how glaciers carve out alpine valleys. The landscape serves as a living illustration, demonstrating how water gradually takes over the reshaping of the earth - a task once dominated by ice. Nestled at the foot of dramatic cliffs, the emerald-green lake is more than just a picturesque view; it is a gigantic geological puzzle waiting to be solved. Together, we will uncover the secrets of massive rockslides and the origin of the natural dams that shaped the valley, all while surrounded by some of Switzerland's most breathtaking alpine panoramas.


Practical information

  • Length: 10.1 km
  • Duration: approx. 4 h + stops
  • Best season: April-October
  • Difficulty: Moderate/Hard
  • Elevation profile: 607-1091 m (+513 m / -508 m)
  • Trail conditions: Steady incline uphill; uneven, rocky terrain downhill
  • Required equipment: Hiking boots / comfortable trail shoes (trekking poles recommended)
  • Price: 125 CHF / person
  • Meeting point: Glarus, Wydenstrasse (free parking)

Route of the Klöntalersee geology hike from Glarus to the Schwammhöhe viewpoint in the Swiss Alps
Route of the Klöntalersee geology hike from Glarus to the Schwammhöhe viewpoint in the Swiss Alps

Who Is This Hike For?

  • For Active Hikers: Perfect for those who enjoy a steady climb that works the muscles and rewards every step with a spectacular alpine panorama.

  • For Curious Explorers: For those who don't just want to pass by the rocks, but want to understand the elemental force with which glaciers carved out this valley.

  • For Panorama Hunters: For those seeking the perfect shot - the view from the Schwammhöhe lookout is guaranteed to be the crown jewel of your photo gallery.

  • For Nature Lovers: For those fascinated by the meeting of turquoise waters and monumental cliff faces, who want a peek "behind the scenes" of the landscape.

Clear Insights, No Textbook Required: You don't need to be a geologist - we uncover the secrets of the terrain through clear, engaging stories rather than complex terminology.


Booking & Availability

These journeys are scheduled on specific dates throughout the hiking season. Our small-group setting ensures a personal atmosphere, allowing plenty of time for interactive insights and a deeper discovery of the landscape.

Secure your spot in time!

Prefer to uncover the secrets of this glacial valley at your own pace? If you are looking for a more flexible schedule or wish to visit the emerald-green shores with your own group on a specific date, choose a private geological tour. There is no fixed agenda: We will focus entirely on you, tailoring the insights and the route to your personal interests and curiosity.