"The Salt Mine Wieliczka is the oldest salt enterprise on Polish land dating back to the Middle Ages. For centuries it was the source of the country’s wealth and the material foundation of its culture. Today it is the most popular Polish tourist attraction.
Several hundreds of years of rock salt exploitation have shaped the spatial arrangement of its excavated structure. Lying on nine levels, concealed under the town, the mine reaches down to the depth of 327 metres. Subterranean Wieliczka consists of nearly 300 kilometres of corridors and almost 3,000 chambers. The tourist route accessible to visitors includes a 3.5-kilometres section located from 64 to 135 metres below ground level." (taken from Mine's offical website).
As you enter the mine you have to walk down 57 levels through these wooden steps to reach the underworld corridors where the visit starts. Amazing carvings and murals (of salt, of course), underground lakes, and chapels, caves in an astonishing size. This is really a 'must see' attraction. The mine has been listed as Unesco's World Heritage, since 1978.
For a detailed history, you can visit mine's offical site at: http://www.kopalnia.pl
I uploaded this picture after inspired from http://www.trekearth.com/gallery/Europe/Poland/East/Malopolskie/Wieliczka/photo669121.htm
by Szabolcs Dombo (szabcsi). The note is also copied from the same reference.
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