Grotte di Castellana

Follow the tour guide of the attraction for two hours. When you go in, you don't turn on the lights. When you come out, you turn on the lights. It is equivalent to walking twice on the same road. It is still very interesting, that is, it takes a long time to get on the ground and slippery. You need to pay attention to your feet and head at all times. I admire the people who discovered this place.

A great visit if you are in Bari, the caves are deep underground and the walk is a few hours - a natural wonder!