It is a special natural preserve and, since 1977, designated as a swamp area of international significance by the Ramsar Convention.

The lake is of aeolian origin, and its bed was formed approximately 1 million years ago, as winds emptied the sand dunes along the clay plateau.

The lake and its surrounding are home to diverse habitats (aquatic, swamp, meadow and steppe), with a number of plant and animal species.

Protected lax-flowered orchid (Orchis laxiflora) is abundant on the meadow lowland terrain around the lake.

Several other rare plants found their shelter here, such as: milk-vetch (Astragalus exscapus), wind flower (Pulsatilla pratensis), sage (Salvia austriaca), herbaceous periwinkle (Vinca herbacea), golden ragwort (Senecio doria).