
Located under the town of Wieliczka Salt Mine Wieliczka is. One of the world's oldest operating mine salt (the oldest is at Bochnia, Poland, 20 km (12 miles) from Wieliczka), which has been operating since prehistoric times.
Commercial mining was stopped in 1996 because of low prices and flooding the salt mines.
And keep in mind that the mine was used as an aircraft factory during World War 2. Interesting instead of staying on top of the salt mine. Obviously all the salt water.


And keep in mind that the mine was used as an aircraft factory during World War 2. Interesting instead of staying on top of the salt mine. Obviously all the salt water.


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