Bus To Wieliczka Salt Mine. Take the bus number 304 which departs from Galeria Krakowska. From 6574 per person.
You can get them on the bus stop or on the bus itself. It makes a salty treat for those who love exploring underground. W Krakowie the Kraków to Wieliczka Salt Mine service departs from Jubilat and arrives in Wieliczka Salt Mine.
As I hear from some sources there is one minibus taking tourist from various hotels also passing pass the station.
Mineshaft in the Wieliczka Salt Mine. The Wieliczka Salt Mine is one of the oldest salt mines and listed on the UNESCO World Cultural Heritage List. Avoid the long queues and follow your guide 135 meters below ground level to explore 22 chambers carved in salt. Bus is another convenient option.