A Roman farm, abandoned in the late antique period (4th century A.D.), and of two inhumation burials have been found on the construction site of the new American naval base.

A small area of late Imperial necropolis, situated in the zone of the “Central Depot” was also investigated. This comprised “a cappuccino” and enchytrismos burials (grave goods: small jar or small jug and a coin). A large channel, obliterated at the beginning of the 1st century B.C., can be dated to the Republican period.

In the “Library” area, on the so-called paleo-ground level 2, datable to an initial phase of the early Bronze Age, traces of an elongated rectangular hut were uncovered.
In the eastern area of the construction site, on the so-called paleo-ground level Flegreo 1, the remaining part of the village found in 1998 and characterised by circular huts, was excavated.

Female burials and a child burial, wells and midden pits were found in the paleo-ground level known as “delle pomici umificate”. These finds attest the existence of a settlement in the same place. In an earlier period the zone was occupied by a large village, excavation of which is still in progress, characterised by rectangular huts with apsidal ends.

The settlement investigated in the area of the “Forum Village” (6.400 m2) dates to the late Eneolithic period. This had oval huts alternating with enclosures, wells and nuclei of burials. Two monumental dwellings were identified, characterised by perimeter posts set into a narrow channel and a large annular corridor. One of the houses stood within a vast enclosure. Also present in the area were wells filled with dumps of pottery and faunal remains. Fifty burials related to this settlement, including sub-rectangular and sub-oval earth graves and small pseudo-grotto tombs. In the latter the deceased was buried in a foetal position; however, the skeletal remains were often disarticulated and a vase, broken before being placed in the tomb, was present.