Underground tunnels, 13th century, linking 2 wells, 1 of which has a 19th century hydraulic pump which is still in working order, which pumped the saline water up from the layer of rock salt 250m below ground, in the Museum of Salt or Musee du Sel, designed by architects Malcotti-Roussey and opened May 2009, in the Great Saltworks at Salins-les-Bains, Jura, Bourgogne-Franche-Comte, France. 15th century saltworks were replaced by industrial buildings in the 18th century, where saline water was pumped from underground wells and evaporated to form salt. Saline water was also piped from here from 1780 until 1895 through 21km of wood then cast iron pipes to the Royal Saltworks or Saline Royale at Arc-et-Senans to be processed. The saltworks at Salins-les-Bains ceased production in 1962 and are now listed as a UNESCO World Heritage Site. Picture by Manuel Cohen
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