During our time in Krakow, we made the short journey southeast to Wieliczka, a town which is famous for it's deep salt mine, with it's 300km of tunnels over nine levels, extending all the way down to a depth of 327m underground.
A small section of the mine from 64m to 135m below ground is open to the public by way of a guided tour, and that was what we would be doing!
After a fair few steps down into the mine, some 300 or so, you're ready to start exploring the tunnels and chambers, some of which are very very impressive, such as the ornamented Chapel of St Kinga. It's worth the visit alone just to stand in the middle of that Chapel, crazy, and all made of salt, whether that's the huge chandeliers or the extremely detailed altarpieces.
If that wasn't enough, there's also some underground lakes, which are rich in salt!
The tour takes around 2 hours, and you end the tour by getting in a very sketchy mining lift which takes you right back up to the top.