The quarry at Peperburg is one of the 43 Sauerland-Seelenorte in the Sauerland-Wanderdörfer.
You can find the history of the Seelenort by Michael Gleich and other useful information at https://www.sauerland-wanderdoerfer.de/de/Sauerland-Seelenorte/Die-43-Seelenorte/Steinbruch-an-der-Peperburg.