Schlabornsee

The Schlabornsee is a 57-hectare natural lake in the north of Brandenburg on the southern edge of the Mecklenburg Lake District.
The lake is part of the Rheinsberg Lake District and lies southwest of Zechlinerhütte, which partially encloses the lake. The lake is crossed by the Rhin, which connects the lake to the north with the Tietzowsee, to the south with the Mehlitzsee and the Great Rheinsberg Lake. There are also connections to the southwest via the Dollgow Canal to the Dollgowsee and to the east via the Bikow Canal to the Bikowsee. From the west, the Schlaborn Peninsula juts out into the crescent-shaped lake, where a campsite is located.

Wikipedia