It is landlocked by (from the north and clockwise) the districts of Stade, Harburg, Heidekreis, Verden, Osterholz and Cuxhaven.In medieval times the region was part of the bishoprics of Bremen and Verden.After the Protestant Reformation the bishoprics became secular principalities, colloquially called Bremen-Verden, and finally parts of the Kingdom of Hanover.The marshy area to both sides of the river is called the Wümmeniederung (Wümme Depression).Free municipalities Media related to Landkreis Rotenburg (Wümme) at Wikimedia Commons