Rock Salt: Miners at work in salt mine Wieliczka, Galicia, Poland. Mine worked for 1,000 years. In 1916, 67 miles of galleries. Very pure deposit. Card published 1916. Chromolithograph

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Size: 1892px × 3543px
Location:
Photo credit: © Photo12/Ann Ronan Picture Library / Alamy / Afripics
License: Licensed
Model Released: No

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