Ooops, here's the picture of the block of salt. Apparently some of the salt has pockets of water encased - millions of years old!
We took a little train ride through some of the mined areas - and saw what some of the early miners left behind. Garbage...
They had a neat system of using old boxes from explosives to block old passageways to keep a good flow of air. Now days they use vinyl sheets.
We also took a tram ride to see other sections - where the floor has been forced up by the weight of the walls, or where the ceiling or walls were spauling. (Flaking off). It was all quite well done. Several videos to explain how the salt is currently mined.
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