The Cacica mine is a large salt mine located in northern Romania in Suceava County, close to Cacica. Cacica represents one of the largest salt reserves in Romania having estimated reserves of 238 million tonnes of NaCl.
Wikipedia https://en.wikipedia.org/wiki/Cacica_mine
Address (Unnamed Road), Cacica 727095, Romania
Coordinates 47°38'6.035" N 25°53'52.63" E