If you're interested in salt mines, and also in that general part of the world, take a look at Wieliczka and Bochnia[0][1], operating as commercial salt mines f

If you're interested in salt mines, and also in that general part of the world, take a look at Wieliczka and Bochnia[0][1], operating as commercial salt mines for 700 years (until the 1990s). Even the chandeliers are made of salt crystal. There's also a health resort for respiratory ailments 135m underground. [0] https://whc.unesco.org/en/list/32/ https://whc.unesco.org/en/list/32/ [1] https://visitworldheritage.com/en/eu/royal-salt-mines-in-wieliczka-and-bochnia-poland/17a0828a-e10a-4ea5-a2b5-4664606c0b23 https://visitworldheritage.com/en/eu/royal-salt-mines-in-wie...