Lake Cauma
Graubünden
Lake Cauma, located near Flims in the Swiss canton of Graubünden, is a picturesque alpine lake renowned for its striking turquoise color and natural setting within a vast forest. Formed from the deposits of the prehistoric Flims Rockslide, the lake covers an area of approximately 10.3 hectares and lies at an elevation of around 997 meters. Its water level fluctuates seasonally by 4 to 5 meters, influenced by underground water flows and snowmelt patterns, with the highest levels occurring in mid-summer. Uniquely, the lake is fed by powerful underground springs, which keep its western bay from freezing even during the coldest winters. The lake's water warms relatively early in the season, making it a popular swimming destination from spring through summer, with average summer temperatures around 21°C and peaks near 24°C. Access to Lake Cauma is primarily by a footpath or the historic Caumasee-Lift funicular, which operates seasonally and was originally constructed in 1937. The surrounding forest and the lake’s natural beauty attract many visitors seeking relaxation and outdoor recreation. Nearby, a complex hydrological system includes other alpine lakes such as Lag Tuleritg and Lag Prau Pulté, which exhibit unique seasonal behaviors due to underground water flow. The lake's name, derived from the Romansh language, translates roughly to "Lake of Midday Rest," reflecting its tranquil ambiance. The area has a history of health-related uses dating back to the 19th century, when the lake's water was believed to have healing properties for various ailments. Today, Lake Cauma remains a cherished natural landmark offering scenic beauty, recreational opportunities, and a glimpse into the region's geological past.
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Tip: The best time to visit Lake Cauma is from late spring to early autumn when the Caumasee-Lift funicular is operational (May to October) and the water temperature is ideal for swimming. Visitors should consider purchasing entrance tickets in advance during peak summer days, as the lake attracts many bathers. The funicular is wheelchair accessible, and the walk from Flims town center to the lift takes about 10 minutes. For those seeking a quieter experience, early morning visits or weekdays are recommended. In winter, the western bay remains unfrozen and accessible, but swimming is not advised. The nearby walking trails offer scenic views year-round. Seasonal changes in water levels and colors provide unique photographic opportunities, especially in mid-summer and autumn.
Interesting facts
- •Lake Cauma’s western bay never freezes in winter due to strong underground springs.
- •The lake’s water level fluctuates by up to 5 meters annually, influenced by snowmelt and underground flows.
- •The Caumasee-Lift funicular, built in 1937, operates on its original tracks and was refurbished multiple times, most recently in 2024.
- •Nearby alpine lakes like Lag Tuleritg and Lag Prau Pulté dry out seasonally and exhibit unique bubbling and color effects due to underground water dynamics.
- •The lake is situated on deposits from the largest prehistoric rockslide in the Alps, the Flims Rockslide.
- •The name 'Caumasee' translates to 'Lake of Midday Rest' in Romansh, reflecting its peaceful setting.
History
Lake Cauma lies within the deposits of the massive prehistoric Flims Rockslide, the largest known rockslide in the Alps.
The lake's water system and levels have been influenced by this geological event and subsequent underground water flows.
In the 19th century, the lake gained a reputation for its healing waters, attracting visitors for therapeutic purposes.
A bathing hut was built in 1835 to facilitate these treatments, including baths for eye and skin ailments.
The Caumasee-Lift funicular was constructed in 1937 to improve access, refurbished in 1988 and again in 1999 and 2024.
Over the years, infrastructure developments, such as road constructions and tunnel projects, have altered the lake's underground water flow, requiring compensatory measures to maintain its water levels.
The lake's name originates from the Romansh word for "midday rest," highlighting its longstanding cultural significance as a tranquil retreat.
Place Guide
Caumasee-Lift Funicular1937
A historic funicular railway built in 1937 that transports visitors from Flims town down to Lake Cauma. It runs on the original tracks and is wheelchair accessible. The lift operates seasonally from May to October, with recent refurbishments enhancing its safety and comfort.
The Island (Isla)
A small, partially wooded island approximately 3,000 square meters in size, located near the center of Lake Cauma. It adds to the lake’s scenic beauty and provides habitat for local flora and fauna.
Surrounding Forest and Trails
The lake is surrounded by the Grosswald Uaul Grond forest, a vast natural area on the debris from the Flims Rockslide. Walking and cycling trails connect Flims to the lake, offering peaceful nature experiences and views of the alpine landscape.
