Mader Stein, or Maderstein, is a 265 m high hill in North Hesse, Schwalm-Eder-Kreis, north-east of the village of Maden, which belongs to the town of Gudensberg.
Wikipedia https://en.wikipedia.org/wiki/Mader_Stein
Address 34281, Germany
Coordinates 51°10'4.369" N 9°22'52.962" E