Featurette: Wieliczka Salt Mine, Near Krakow, Poland
Built in the 13th Century, the Wieliczka Salt Mine is the oldest continually-producing salt mine in the entire world — producing table salt from the 1200s until production finally halted […]
Built in the 13th Century, the Wieliczka Salt Mine is the oldest continually-producing salt mine in the entire world — producing table salt from the 1200s until production finally halted […]