The lake basin is of glacial origin, formed by the erosion of the Adige glacier during the last ice age.
The water contains a rich population of white water lilies (Nymphaea alba), which are legally protected in the province.
The area is recognized as a 'biotope' by the Autonomous Province of Trento to ensure strict environmental conservation.
Its ecosystem supports the presence of the fire salamander, a species indicator of high air and water quality.
The lake is internally referred to as a 'torbiera' (peat bog) in its northern section due to the accumulation of organic matter.
It is situated on the watershed divide between the Adige Valley and the Gresta Valley.
Lago di Cei is a small, protected alpine lake situated at an elevation of 920 meters in the shadow of Mount Stivo. It is characterized by its significant peat bog ecosystem and the presence of rare aquatic plant species, including the white water lily. The lake is fed primarily by rainfall and snowmelt, resulting in a fluctuating water level throughout the year. Surrounded by dense beech and spruce forests, it serves as a habitat for local amphibian populations. A small visitor center provides information on the surrounding biotope and geological history of the area. It is part of the Natura 2000 network, designated for its high biodiversity value. The perimeter is accessible via a path that circles the entirety of the basin.
The wooden boardwalk on the eastern shore provides the clearest view of the lilies against the backdrop of the forest.
Wear waterproof hiking shoes, as the path near the peat bog section can be muddy regardless of recent weather.
Bring binoculars for birdwatching, as the dense forest cover attracts various nesting mountain birds.
Practice 'leave no trace' principles strictly to protect the sensitive aquatic vegetation.
Do not attempt to walk on the marshy edges of the lake, as the terrain is unstable and environmentally sensitive.
Stay on marked trails to protect the fragile peat bog; swimming is discouraged to preserve the delicate aquatic ecosystem.
