Tovel Lake
Trentino-Alto Adige
Tovel Lake, situated at an elevation of 1177 meters in the Val di Tovel within Trentino, Italy, is a picturesque alpine lake renowned for its natural beauty and ecological importance. Covering an area of approximately 0.38 square kilometers, it lies inside the Adamello Brenta Nature Park, surrounded by the dramatic Dolomiti di Brenta mountain range. Historically known as the "Red Lake" due to a striking summer phenomenon where its waters turned red from the bloom of the alga Tovellia sanguinea, this unique event ceased in the mid-20th century. The lake is fed by subterranean springs emerging from the porous terrain, which saturate the aquifer feeding it, and supports diverse aquatic life including alpine char, sanguinerola, and other fish species. The surrounding valley is home to brown bears, giving the lake its other nickname, "Bear Lake." Recognized internationally as a wetland of importance under the Ramsar Convention since 1980, Tovel Lake offers visitors a rich combination of ecological significance, scenic landscapes, and cultural history.
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Astuce: The best time to visit Tovel Lake is during late spring to early autumn when trails are accessible and the natural surroundings are vibrant. While the famous red water phenomenon no longer occurs, the lake's serene alpine environment and hiking opportunities remain captivating. Visitors are advised to check weather conditions and park regulations ahead of their visit. Booking guided tours or accommodations in advance is recommended during peak season. Discounts may be available for groups, seniors, or children at visitor centers within the Adamello Brenta Nature Park.
Faits intéressants
- •Tovel Lake was historically known as the "Red Lake" due to the summer reddening caused by the alga Tovellia sanguinea.
- •The lake is part of the Adamello Brenta Nature Park and recognized as a Ramsar wetland of international importance since 1980.
- •The red coloration phenomenon stopped after the 1960s, attributed to changes in livestock grazing which reduced nutrient inflow.
- •The lake supports diverse fish species such as alpine char and sanguinerola, and is surrounded by habitats of brown bears.
- •Subterranean springs feed the lake, emerging due to the porous geology of the surrounding area.
Histoire
Tovel Lake's basin was formed about 15,000 years ago after the last glaciation, creating the original smaller lake with a semicircular shape and depths up to 20 meters.
Around 1597, the lake's water level rose significantly due to natural debris blocking its outlet, reaching about 1180 meters elevation.
Subsequent erosion restored the lake's level to its current 1177 meters.
Historically, the lake was famous for the seasonal reddening of its waters caused by the alga Tovellia sanguinea, a phenomenon that ceased after the 1960s, linked to changes in traditional cattle grazing practices.
