Hansa Pit
Bad Harzburg, Germany · built 1865
The Hansa Pit (Grube Hansa) was a mine on the territory of Harlingerode in the county of Wolfenbüttel in the Free State of Brunswick and later in Lower Saxony, West Germany. It was founded on the Langenberg south of Harlingerode; however, the only remainders are located on the north side.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).