Visit the wieliczka salt mine on this 5 hour guided tour which is accessible for wheelchair users and limited to just six people the mine which has been operating for at least 700 years is a unesco world heritage site and has a labyrinth of tunnels pits and chambers all hewn by hand from solid salt admire beautifully adorned chapels and underground lakes all located 210 to 443 feet 64 to 135 meters below the ground