Salzwelten Hallein is an underground salt mine, operating for over 7,000 years, i.e. since the time of the Celtic tribes or earlier. Since the First World War it has been operating as a museum and is open to the public. The route lasts about 90 minutes and includes 1 kilometer crossing with a guide. It is necessary to put on a protective white suit. Visitors ride down a special cable car to the lower level of the mine, and then take a cruise on the underground lake.
With the advent of the Romans, the extraction of salt practically ceased. It wasn't until the 12th century that salt became the "white gold" of Salzburg. In July 1989, active extraction of the raw material officially ended. Until then, approximately 45 million m³ of brine was produced here and approximately 12 million tons of salt were mined.
Mine tunnels stretch for 65 kilometers, of which you can still walk after about 13 kilometers. The salt content of mine deposits is currently between 30 and 35 percent.