Röhrigschacht
Sangerhausen, Germany
The Röhrigschacht ("Röhrig Shaft") is an old copper slate mine which is now a mining museum and show mine in the village of Wettelrode in the county of Mansfeld-Südharz in the German state of Saxony-Anhalt.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).