The Riesenstein is a megalith or menhir, which is situated close to the village of Wolfershausen. It is the largest megalith in the district of Schwalm-Eder-Kreis, Hesse, Germany.
Wikipedia https://en.wikipedia.org/wiki/Riesenstein_(Wolfershausen)
Address (Unnamed Road), 34587, Germany
Coordinates 51°11'32.948" N 9°26'38.98" E