The salt mine at Wieliczka, near Kraków in southern Poland, is a World Heritage Site. This mine has been worked continuously since Medieval times. Miners have carved elaborate underground rooms and sculptures within the Miocene salt. A church, a large chamber carved entirely within salt, including floor, walls, ceiling, and decorations. Chandeliers are made with salt crystals. An elevator took us to 210 ft down whee we began a 1.5 mile long downhill stroll, passing 20 or so of the reported 2000 chambers, finishing at around 443 ft below surface.