Bildungseinrichtung Heidiland

Wie kam es zum Flimser Bergsturz?

Absturz- und Ablagerungsgebiet des Flimser Bergsturzes
Stratigraphische Einheiten am Flimserstein

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Ausstellungs-Container in Vättis
The latest studies on the largest landslide in Europe


The Flims landslide is known as the largest landslide in Europe. In 2020, Jordan Aaron (Department of Earth Sciences, Geological Institute, ETH Zurich) took a closer look at the triggering factors for the natural disaster, which occurred about 9450 years ago.

With the help of geological and geomorphological field mapping and modelling, mechanisms were derived that could have triggered the rockfall.  The research team was able to show that the landslide is related to the presence of weak marl-like rock layers. Strong seismic tremors, increased pore water pressure, or a combination of both, eventually reduced strength along the fracture surfaces and triggered the fall of the mountain.

The mechanisms by which this strength reduction occurs are currently poorly understood, but appear to be crucial in explaining the catastrophic failure at Flims as well as many other rock avalanches around the world.

Want to know more?

The exhibition «BergeBeben – BergeStürzen» in the mountain village of Vättis traces the past and present earthquakes and landslides in the World Heritage cantons of Graubünden, St. Gallen and Glarus. The connection between earthquakes, landslides and the formation of mountains, especially the Alps, is also discussed.

Opening hours

From April to November, the exhibition is open daily. From December to March it can only be visited on request. Guided tours for groups on request.


Public Transport

By train to Bad Ragaz, change to bus 451 (direction Vättis, dorf), stop Vättis/ Post, on foot it is about 5 minutes to the "BergeBeben-Container" in the Calfeisenstrasse


Af of the A3 to exit 12 Bad Ragaz. From Bad Ragaz continue on Pfäferstrasse in the direction of Pfäfers, from Pfäfers continue on Vättnerstrasse to Vättis Dorf (parking spaces in the village)


Wie kam es zum Flimser Bergsturz?

Calfeisenstrasse 7-1, 7315 Vättis

Responsible for this content UNESCO-Welterbe Tektonikarena Sardona.
This content has been translated automatically.

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