The Wieliczka Salt Mine, located in the town of Wieliczka in southern Poland, lays within Kraków metropolitan area. The mine had been in continuous operation, producing table salt since the 13th century until 2007 as one of the world’s oldest operating salt mines (the oldest being in Bochnia, Poland, some 20 kilometers away from Wieliczka).… Continue reading Wieliczka Salt Mine: World’s Oldest Operational Salt Mine
