Unfortunately I do not know whether a single visitor could go to this attraction as I visited with a group but best to either visit the information office or, better still, their website. We had a guide who spoke excellent English which was a real bonus. It would appear that the entire town is situated over caves and this one is quite large going deeper and deeper into the "underworld". This particular warren of caves is, unbelievably, under one house and the entrance is actually through the garage! Any prospective visitor must bear in mind that they must be able to negotiate steep steps.
We had no chance to visit the rest of Gravina but I would expect that this is the highlight of the town.
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