The second season of the Segni Project undertook work in the areas of Prato Felice and Piazza Santa Maria. The extension of the excavation to the north and south at Piazza Santa Maria exposed various structures, belonging to different phases on different levels that show how, for most of the town’s history the area was not a piazza.

The lower level corresponds with the Roman and early medieval phases. The most spectacular element was a vast section of a splendid polychrome mosaic, datable to about the mid 1st century B.C. South of this room, whose razed perimeter walls were identified on two sides, a large area of floor make-up, cut by later structures, indicated that the building was enlarged in the late Republican period. Evidence of reuse in the late antique or early medieval periods was documented across the entire complex on the same level as the Roman structures.

In about the 12th century, a substantial rise in the area’s ground level indicated the abandonment of these structures, although it is likely that some were reused. The large foundation for several orthogonal walls that emerged along the southern excavation edge dates to this period. Between the 12th and 17th centuries, a large number of earth graves all aligned with the heads to the west, occupied the area and were present across the entire excavation. A burial containing at least six individuals in a funerary structure was also identified, to the east of which there appeared to be a similar tomb.
The large number of burials suggests they were associated with a church, completely demolished in the 17th century, the building materials from which were removed for use elsewhere.