Season Team

• AIAC_1897 - Porto - 2008
  Geophysics: The three year programme of magnetometer survey on the Isola Sacra began in the north-eastern corner of the island and has detected: • Structures to the south of the Fossa Traiana between Sant Ippolito and the Capo due Rami • that are possibly associated with the _Statio Marmorum_ • Road alignments • Field boundaries • Possible tomb structures overlooking the Tiber. Excavation: The main _focus_ of excavations remained the large open area at the eastern edge of the Palazzo Imperiale initiated in 2007. The sequence here is now clearer. Considerable emphasis was directed towards the southern side of the channel excavated in 2007. While the expected southern mole has proved elusive, the excavations uncovered the northern face and a range of rooms belonging to the large building delimiting the southern side of the channel: this runs for 250m in an east-west direction, and was c. 80 m wide. This southern wall face embodied a high complex structural sequence running from the 1st through to the later 5th centuries AD. More was learned about the circular building uncovered in 2007. It was in fact ovoid in shape (c. 42m x 35 m) and may have acted as a centre for the registration of incoming cargoes. Emphasis was also directed towards the excavation of the sequence of cisterns at its northern end. It now seems certain that these were built during the Trajanic and Hadrianic periods, undergoing an important series of modifications down into the late antique period, as well as providing evidence for limited occupation during the 11th-13th centuries AD. It is possible that these were the easternmost of a line of cisterns along the northern façade of the Palazzo Imperiale, that were fed by an aqueduct running along the south side of the channel uncovered in 2007, and which may have been used to provide freshwater for ships leaving Portus on their return journeys. Additional fieldwork included a programme of geoarchaeological coring in the excavation area (J-P Goiran, Universite de Lyons), as well as a sub-bottom profile survey of the Trajanic basin in collaboration with the Duca Sforza Cesarini.