The Senne is a natural region in the Regierungsbezirk of Detmold, in the state of Nordrhein-Westfalen in west-central Germany. It lies to the west of the Teutoburger Forest, and has an area of approximately 210 km².^[1] It lies between the cities of Bielefeld to the north-west, Detmold to the north-east, and Paderborn to the south.

You can help expand this article with text translated from the corresponding article in German. (July 2017) Click [show] for important translation instructions. View a machine-translated version of the German article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 9,119 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Senne]]; see its history for attribution. You may also add the template {{Translated|de|Senne}} to the talk page. For more guidance, see Wikipedia:Translation.

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Senne
Map
The Senne in Nordrhein-Westfalen
Geography
Location	Ostwestfalen-Lippe, Nordrhein-Westfalen, Germany
Coordinates	51.85°N 8.78°E / 51.85; 8.78
Area	210 km2
Ecology
Ecosystem(s)	moorland, sand dunes

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Heath, calcareous grassland, and moorland cover most of the area. The river Ems arises here. Flora and fauna are very rich in the Senne, 901 of the 5000 animal and plant species are listed on the IUCN Red List.^[2]

116 km² of the Senne and therefore more than the half of it area are taken by the Sennelager Training Area, which is mainly used by British forces. By 2020 all of the planned reductions in British forces had been completed,^[3] which now leaves the future of this landscape undecided.

The region is the home of a critically-endangered breed of riding horse, the Senner, which is believed to be the oldest breed of riding horse in Germany, and is documented at least as far back as 1160.^[4][5] It lived in feral herds in the moorlands and in the Teutoburger Forest to the east. In 1999, some were introduced to the Moosheide [de] nature reserve to assist in conservation grazing.^[6]: 502