Administratively it belongs largely to Hochsauerlandkreis, in the northeast, near Bleiwäsche, it is part of the county of Paderborn.
It is roughly elliptical in shape; its longitudinal axis running from east-northeast to west-southwest.
In the south it is adjoined by the Sauerland and Upland (landscapes in the Rothaar Mountains); in the west by the Warstein Forest (the eastern part of the Arnsberg Forest Nature Park) and in the northwest by the narrow Haarstrang.
In the north the terrain descends (on the far side of Sintfeld and Haarstrang) more or less gently into the Westphalian Bight towards the River Lippe.
The plateau forms an island of farmland in the middle of forested mountains and hills.