Flimser Bersturz in Laax.
Biketrails entlang der Rheinschlucht.
Flimser Stein in Laax.


The Flims landslide

Did you know that the unique terraced landscape of Flims was caused by a violent natural disaster? Over 9,500 years ago, the largest landslide ever to hit the Alps sent 7 cubic kilometres of limestone rock tumbling down from the Flimserstein and into the Rhine. It is because of this landslide that we are today able to enjoy views of the extraordinary Rhine gorge. The origin of the landslide area is situated at approximately 2,700 metres above sea level, with Flims located at approximately 1,100 metres and the filled glacial valley at around 600 metres.

Lake landscape

The violent landslide led to the formation of seven mountain lakes – Lake Tuleritg, Lake Cauma, Lake Prau Pulté, Lake Laax, Lake digl Oberst, Lake Cresta and Lake Tiert.

Lake Laax, 1,016 metres above sea level

Lake Laax (Lag Grond), situated in the centre of the town at 1,016 metres above sea level, is approximately 5 hectares in area and has an average depth of 4.5 metres. Lake Laax also gave its name to the town of Laax – "Ils lags" means "the lakes" in Romansh. In summer, it is perfect for bathing, while in winter it is ideal for hiking or skating.

Sonnenaufgang am Caumasee.

Lake Cauma, 997 metres above sea level

Known as "Lag la Cauma" in Romansh, meaning "lake siesta", Lake Cauma is the jewel of Flims. It measures 625 metres at its longest point and 325 metres at its widest.

[Translate to englisch:] Der Crestasee in Flims

Lake Cresta, 844 metres above sea level

The "forest ridge lake" is situated on the eastern border between Flims and Trin. Featuring crystal-clear water and nestled in a dark green grove of trees, Lake Cresta is a true hidden gem. It measures 375 metres in length and 180 metres in width and is listed as a protected natural landmark of regional importance in the canton of Graubünden.

1,100 metres above sea level

Lake Tiert

This small, circular lake is located on the border between Flims and Laax, right beside the Laax stream. 

1,122 metres above sea level

Lake Prau Pultè

This mysterious, small forest lake is the first and highest-situated of the three connected landslide lakes. It is six metres deep at its deepest point. Its overflow flows into Lake Tuleritg and then into Lake Cauma. The water of Lag Prau Pulté is not clear, but has a greenish-grey shine.

1,015 metres above sea level

Lake Tuleritg

Lake Tuleritg is crescent-shaped and has an open inlet. In spring, it fills up in around three days once Lag Prau Pulté is full and overflowing. The lake is shallow, often less than one metre deep, and only reaches a depth of two to three metres in the eastern section. The water begins to retreat during the month of August. Lake Tuleritg then dries out completely in autumn.

Alle Massnahmen rund um den Umweltschutz in Laax.


In LAAX, we have set ourselves the goal of trying to leave the world in a better condition than how we found it. As a result, in all of our endeavours to make your holiday as eventful as possible, we always show respect for nature and do everything we can to treat our world in the right way. Learn more about our Greenstyle initiatives here.

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