Salt Mine Wieliczka

The Wieliczka Salt Mine is a salt mine in the town of Wieliczka, near Kraków in southern Poland.
From Neolithic times, sodium chloride (table salt) was produced there from the upwelling brine. The Wieliczka salt mine, excavated from the 13th century, produced table salt continuously until 1996, as one of the world's oldest operating salt mines. Throughout its history, the royal salt mine was operated by the Żupy Krakowskie (Kraków Salt Mines) company.
Due to falling salt prices and mine flooding, commercial salt mining was discontinued in 1996.
The Wieliczka Salt Mine is now an official Polish Historic Monument (Pomnik Historii) and a UNESCO World Heritage Site. Its attractions include the shafts and labyrinthine passageways, displays of historic salt-mining technology, an underground lake, four chapels and numerous statues carved by miners out of the rock salt, and more recent sculptures by contemporary artists.
History
The Wieliczka Salt Mine reaches a depth of 327 metres (1,073 ft), and extends via horizontal passages and chambers for over 287 kilometres (178 miles). The rock salt is naturally of varying shades of grey, resembling unpolished granite rather than the white crystalline substance that might be expected.
Since the 13th century, brine welling up to the surface had been collected and processed for its sodium chloride (table-salt) content. In this period, wells began to be sunk, and the first shafts to be dug to extract the rock salt.[5] From the late 13th to the early 14th century, the Saltworks Castle was built. Wieliczka is now home to the Kraków Saltworks Museum.
King Casimir III the Great (reigned 1333-1370) contributed greatly to the development of the Wieliczka Salt Mine, granting it many privileges and taking the miners under his care. In 1363 he founded a hospital near the salt mine. It is said that he turned a Poland of wood into a Poland of stone due to the great amount of wood from the neighbouring forests used as scaffolding and supports.
Over the period of the mine's operation, many chambers were dug[6] and various technologies were added, such as the Hungarian horse treadmill and the Saxon treadmill for hauling salt to the surface. During World War II, the mine was used by the occupying Germans as an underground facility for war-related manufacturing.
The mine features an underground lake, exhibits on the history of salt mining, and a 3.5-kilometre (2.2-mile) visitors' route (less than 2 percent of the mine passages' total length) including statues carved from the rock salt at various times.
Surface and underground views of Wieliczka town and salt mine, engraved in 1645 by Willem Hondius
A legend about Princess Kinga, associated with the Wieliczka mine, tells of a Hungarian princess about to be married to Bolesław V the Chaste, the Prince of Kraków. As part of her dowry, she asked her father, Béla IV of Hungary, for a lump of salt, since salt was prizeworthy in Poland. Her father King Béla took her to a salt mine in Máramaros. She threw her engagement ring from Bolesław in one of the shafts before leaving for Poland. On arriving in Kraków, she asked the miners to dig a deep pit until they come upon a rock. The people found a lump of salt in there and when they split it in two, discovered the princess's ring. Kinga had thus become the patron saint of salt miners in and around the Polish capital.
During the Nazi occupation, several thousand Jews were transported from the forced labour camps in Plaszow and Mielec to the Wieliczka mine to work in the underground armament factory set up by the Germans in March and April 1944. The forced labour camp of the mine was established in St. Kinga Park and had about 1,700 prisoners. However, manufacturing never began as the Soviet offensive was nearing. Some of the machines and equipment were disassembled, including an electrical hoisting machine from the Regis Shaft, and transported to Liebenau in the Sudetes mountains. Part of the equipment was returned after the war, in autumn 1945. The Jews were transported to factories in Litoměřice (Czech Republic) and Linz (Austria).
Tourism
Bottom view of one of the rooms dug in the mine, held up by thick scaffoldings.
Tallest room in the mine, held up by thick wood scaffoldings
The mine is currently one of Poland's official national Historic Monuments (Pomniki historii), whose attractions include dozens of statues and four chapels carved out of the rock salt by the miners. The older sculptures have been supplemented with new carvings made by contemporary artists. About 1.2 million people visit the Wieliczka Salt Mine annually.