This was the second excavation campaign in the town of Colle Rotondo (Anzio). Excavations continued in only one (A1) of the three areas opened in 2010. Two new trenches were opened, A4 in the south-western sector of the eastern area of the plateau and A5 touching the western and eastern parts in correspondence with the inner earthwork.

In Area 1, the sector investigated inside the great external earthwork was extended. A large plaster structure of plaster on timber posts was exposed, partially burnt its interior. posts. Given the almost complete absence of pottery and its position, the structure seems to have been part of the large bastion protecting the settlement’s entrance. This has been dated by radiocarbon undertaken at CEDAD in Lecce, to between the end of the 10th and the first half of the 9th centuries B.C.

In Area 4, the opening of a vast sector exposed a long channel with a rectangular section on a north-east/south-west alignment, towards the edge of the plateau. The structure was filled with dolia and tile fragments datable to the early and middle Republican periods and finds parallels in similar structures linked to agricultural activities. The channel was mainly cut into sterile terrain, but some parts had cut into layers with materials dating to the Orientalising and archaic periods. In Area 5, the inner earthwork with its large defensive ditch was uncovered. The excavation of the ditch exposed a layer overlying the bedrock containing several lithic artefacts datable to the middle and paleolithic periods. The ditch was dated by the presence of a well cut into the defensive structure containing 4th century B.C. material.