Tarnowskie Góry-Bytom Undergrounds
Bytom, Poland
Culture
The Tarnowskie Góry-Bytom Undergrounds are one of the largest systems of underground mine workings in Poland and Europe, a remnant of centuries-long silver ore extraction at the Fryderyk Mine within the Tarnowskie Góry Ridge.
From Wikipedia, CC BY-SA 4.0
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