Drei Kronen & Ehrt
Oberharz am Brocken, Germany
Drei Kronen & Ehrt is a former mine in the Harz Mountains of central Germany. It is located in the parish of Elbingerode in the county of Harz (Saxony-Anhalt). The mine extracted pyrite. Since 1992 it has been used, albeit not continuously, as a visitor mine.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).