Pozzo della Cava

This place is listed in many "Things to do in Orvieto" publications but my personal opinion is, it's not worth it unless you're really bored or have run out of things to do!

There's not much to see to begin with, and what you will see (underground caves ) you can find similar scenes in some local hotels and restaurants. For 4 Euros (at this writing) I'd say you can find better places to visit (like the magnificent Duomo for 5 Euros) - that is, unless you are crazy about spelunking and must go to every cave you come close to!