A short historic view of the incredible salt mine in Wieliczka outside Krakow in Poland. Everyone who visits the area should see this spectacular place. Chapels and figures carved in salt stone by the mine workers over the course of many centuries. The underworld really can be a beautiful place.
Tutmarie and I bought it and read it after a visit there in July. The book contains many photos from the place and too little text.

What Majosim said :-)

Go there!