It is not obvious from a glance at a map that the Deister-Süntel valley extends northwards over the Süntel region to the Rodenberg Bowl (Rodenberger Mulde) east of the Bückeberg and the Aue valley, and southwards as far as the Hachmühle Basin (Hachmühle Becken), with the Kleiner Deister to the east, a distance of some 25 km.