The Weser Uplands-Schaumburg-Hamelin Nature Park (German: Naturpark Weserbergland Schaumburg-Hameln) lies on the northern edge of the German Central Uplands where it transitions to the North German Plain, about 50 kilometres (31 mi) southwest of Hanover. The sponsor of the nature park, which was founded in 1975, is the state of Lower Saxony. The park extends along the Weser valley between Rinteln and Hamelin and includes parts of the Schaumburg Land, Calenberg, Lippe and Pyrmont Uplands from Bad Nenndorf in the north to Bad Pyrmont in the south, Bückeburg and Bad Eilsen in the west and Bad Münder and Osterwald in the east. Its highest elevation is in the Süntel hills.