When in Crakow…..
I once visited these salt-mines in Cracow….
Have never forgotten about it because it was overwhelming!!! very exciting, interesting an uniqe:)
I recommend it!
The historic Salt Mine in Wieliczka is the only mining site in the world functioning continuously since the Middle Ages. Lying on nine levels, its original excavations (longitudinals, traverses, chambers, lakes, as well as minor and major shafts) stretch for the total of about 300 kilometres: reaching the depth of 327 metres they illustrate all the stages of mining technology development over time.