Добромиль, Italy
The Salina mine is a former salt mine in Lviv Oblast, Ukraine. Prior to World War II and the German invasion of the USSR, local residents worked in the mine, producing salt for use in Galicia. The mine is known for being the site of a mass grave during World War II.
Listen to the audio guide for Salina Mine Free on WIP — starts by itself when you arrive, even with the screen off