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.
Two geological strata from the Malm epoch are named after villages in the area: "Münden marl" (Münder Mergel) and "Eimbeckhausen Plateau Chalk" (Eimbeckhäuser Plattenkalk).
There are still several old examples of this rare tree to be found in the Deister-Süntel valley: in the Süntel near Hülsede, in the Deister near Feggendorf and Köllnischfeld, in Lauenau, Beber, Luttringhausen and Bad Münder.
To protect them, as well as birds of prey and songbirds, new ponds have been constructed, grasslands purchased and hedge shrubs planted to create a network of biotope habitats.
Other villages include Algesdorf, Altenhagen I, Altenhagen II, Bakede, Beber, Böbber, Egestorf, Eimbeckhausen, Feggendorf, Flegessen, Groß Hegesdorf, Hachmühlen, Hamelspringe, Hasperde, Hemschehausen, Klein Süntel, Kleinhegesdorf, Luttringhausen, Lyhren, Meinsen, Nettelrede, Nienstedt, Reinsdorf, Rohrsen, Schmarrie, Sedemünde, Soldorf and Waltershagen.