The Oberwälder Land is a natural region in the extreme east of the German state of North Rhine-Westphalia with small elements parts in Hesse and Lower Saxony.
The deep, sunken Weser valley to the east necessitates a very steep descent for the streams of the Oberwälder Land, which cut deeply into the soft limestone as a result.
There are numerous 'box-shaped' valleys which, in the west, flow towards the flat Nethe depression around Brakel, and, in the east, run directly to the Weser and lie at a height of about 150 m NN.
The heavily dissected uplands reach heights of up to 350 m and, in places, their slopes descend in steep steps.
The greater part of the landscape is given over to arable farming; grassland is only found on the wetter, wider valley floors.