Stechlin-Ruppiner Land Nature Park is a nature park and reserve in the state of Brandenburg, Germany. It covers an area of 1,080 km2 (420 sq mi). It was established on July 1, 2001. It includes Lake Stechlin, home to the endemic Stechlin cisco.
53°06′13″N 13°03′01″E / 53.1037194444°N 13.0501472222°E