The Ravensberg Basin () or Ravensberg Hills () is a natural region in the governorate of Detmold () in the northeastern part of the German state of North Rhine-Westphalia; small elements also fall within the neighbouring state of Lower Saxony. It is part of the lower Weser Uplands and includes the hilly basin country between the Wiehen Hills in the north, Lippe Uplands in the east, Teutoburg Forest in the south and Osnabrück Hills in the west. The heart of the Ravensberg Basin is almost coincident with the cultural region of the Ravensberg Land. See also County of Ravensberg Ravensberg Land Ravensberg Castle Minden-Ravensberg (old administrative unit) Sources Adolf Schüttler: Das Ravensberger Land. Aschendorff, Münster 1986. Emil Meynen (Hrsg.): Handbuch der naturräumlichen Gliederung Deutschlands. Selbstverlag der Bundesanstalt für Landeskunde, Remagen 1959-1962 (Teil 2, enthält Lieferung 6-9), ISBN B0000BJ19F External links BfN landscape fact file, sparsely-settled outer areas of the Ravensberg Basin BfN landscape fact file, densely populated core (here with Bad Salzuflen) Ecological characteristics Regions of North Rhine-Westphalia Herford (district) Gütersloh (district) Lippe Geography of North Rhine-Westphalia !