Archaeological investigations were undertaken by means of trenches, dug 10 metres apart, running parallel to via di Settebagni and then by a partial excavation which brought to light the archaeological evidence of various types and chronology that is listed below.
1. A cavity (4 ×14, 50 × 0.90m) cut into the tufa bed-rock and filled with a deposit containing fragments of archaic and Republican pottery and two small, intact black glaze vessels. This structure is of Roman date, as attested by the ceramic finds, but its use is unknown.
2. An oval cut in the tufa bed-rock, inside which are yellow and red tufa blocks, placed parallel and at right angles to the cut. This has been partially excavated and produced a large amount of Roman material. Other, smaller tufa blocks were found in the vicinity.
3. A block of cement conglomerate placed directly on the tufa bed-rock, surrounded by a small scatter of building materials.
4. A circular well (diameter 0.90m), dug into the tufa bed-rock, faced with opus signinum and linked to cuniculi. In the second phase of investigation, the well was excavated and an underground cuniculus (1.60m high and 0.60m wide) was discovered. It has a vaulted roof and is situated at 0.53m below the suface of the bed-rock. The well-cavity is characterized by the usual foot-holds along the walls and by a facing of two layers of well made plaster, which also covers the cuniculus. It was packed with numerous tiles, the stamps from some of which, together with several fragments of black glaze ware and Italian sigilata give a date of somewhere between the 1st century B.C. and the 1st century A.D. (Maria Cristina Grossi)