Located in the municipalities of Dinkelland and Tubbergen in eastern Overijssel, close to the German border, north of Ootmarsum and east of Vasse .
Spanning roughly 355 hectares (core nature), though the larger Natura 2000 area with Dal van de Mosbeek covers over 1,300 ha landgoedereninoverijssel.nl .
It’s an erosion valley in the Ootmarsum moraine, carved by ancient glacial forces, characterized by significant elevation differences—a rarity in the otherwise flat Netherlands .