"The Aufgeklärtes Glück Mine (German: Bergwerk Aufgeklärtes Glück) is an old mine, now closed, in the valley of Thumkuhlental in the Harz Mountains of Germany. It ...
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lies southwest of Hasserode, a village on the edge of the town of Wernigerode in the state of Saxony-Anhalt. Nowadays, its exterior facilities form part of a nature and geological educational path that, thanks to the reconstruction of an old mine water management system (Wasserkunst), make a very graphic witness of the former mining activity at the foot of the Harz´ highest mountain, the Brocken." - (en.wikipedia.org 30.01.2020)