Investigations undertaken prior to construction on a small building site (375m.sq) revealed an complex archaeological context with a long chronology. A chamber tomb, from which the body had either been robbed or transferred elsewhere in antiquity, can be dated to the Hellenistic period. Two open drainage channels, cut into the tufa bed-rock, crossed the slope in the direction of the Fosso di Tor Angela situated below. One of these channels seems to have been related in function to the tomb or at least contemporary with it. Following the robbing of the tomb and the end of use of the channels, a road was built across the area in correspondence to level ground on its upper part. The cart tracks on the road, visible in the bed-rock, cut into earlier stratigraphy. A series of plough-marks, parallel to the road, are also visible across the entire area under investigation attesting its final use for intensive agriculture. (Roberto Manigrasso)