At the top you will find a gate where you will often find a sign with no entry, as the path is quite rough and there is danger of falling stones. Standing in front of this huge cavity you are amazed, as if it were a timeless place, a lunar landscape. The nature of the cavity has several compressed and friable layers, and inside there are remains of Roman masonry works and the existence of an old cistern, almost to think that it was once used as a nymphaeum for the villa above. It was later used as a stronghold by the inhabitants of Capri during the raids of pirates in medieval times. In the 1920s, Giorgio Cerio, who became the owner, restored the old cistern and started the construction of a long staircase that connected the cavity to the Krupp street.