The archeological site of St. Agnano was excavated in 1987. The excavations were led by the paleontologist Coppola and it was in 1991 that the burial places of Ostuni 1 and Ostuni 2 were exhibited in the museum. The area which can be visited is still the subject of archeological enquiries and has given us remains from the Neolithic era, the Japigian-Messapian age and the Middle Ages.  In modern times the cave was used a place of the cult of the Holy Virgin as an affresco, which can still be seen on the interior wall of the cave, demonstrates.