The Rinsleyfelsen is one of the 43 Sauerland-Seelenorte in the Sauerland-Wanderdorf.
The history of the Seelenort by Michael Gleich and other useful information can be found at https://www.sauerland-wanderdoerfer.de/de/Sauerland-Seelenorte/Die-43-Seelenorte/Rinsleyfelsen.
For a hike to the rock, the Kur- und Bürgerhaus in Saalhausen is a good starting point. From here you hike 7km along the forest adventure trail and at the end with a short climb to the Rinsleyfelsen.