Located in southern Poland, the deposit of rock salt in Wieliczka and Bochnia has been mined since the 13th century, this major industrial undertaking being the oldest of its type in Europe. It illustrate the historic stages of the development of mining techniques in Europe from the 13th to the 20th centuries: both mines have hundreds of kilometers of galleries with works of art, underground chapels and statues sculpted in the salt, making a fascinating pilgrimage into the past.
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