It has no sharply defined boundary with the Lüneburg Heath; as a result many places are seen as belonging to both regions.
Typical of the gently undulating terrain are the many small rivers, streams and lakes.
These include the rivers Wümme, Wieste, Fintau, Rodau, Wiedau and Vissel, as well as the twin lakes known in German as the Bullenseen.
In this ancient landscape Low German is commonly spoken.
The Wümme Depression is designated by the European Environment Agency (EEA) as a Special Area of Conservation (SAC), no.