What Is So Unusial About The Salt Mines In Wieliczka, Poland?
Answer:
One of the world's oldest salt mine. From 1772 to the XIII century, together with the salt mine "Bochnia" be in the Zupa Krakow.
In 1976, the mine was placed on the national register of historic monuments. Two years later contained by 1978, entered by UNESCO to the first list of World Cultural and Natural Heritage. In 1989, "Wieliczka" extended list of World Heritage within danger. Since 1994, it is also a monument to Polish history.
Wielicka mine has 9 levels. The first one - the plane of Bono - goes to the depth of 64 meters, whilst the last is located 327 meters below the surface of the earth.
Total length of sidewalks, connecting going on for 3000 excavations (walkways, ramps, service chambers, lakes, shafts...), exceeds 300 km.
Cubage excavations troop is about 7.5 million m^3.
Mine has a unique microclimate, which includes - surrounded by addition to high humidity and the content of sodium chloride - a constant temperature (about 9-12 ° C), pressure, ionization and radiation of neutral, high manganese content in the air, magnesium and calcium.
At the depth of 135 meters within the Wessel Lake chamber holded are physical therapy for people with chronic upper respiratory tract.
Hope that back.
Ans sorry for my not the best english. ^^;
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