The area in which the excavations began is situated in the south-west corner of the forum, almost at the edge of the short side on which the Capitolium stands. This sector, occupied by a building adjacent to that identified immediately to the east, had already been partially investigated. The visible structures were constituted by three rooms, one of which paved with mosaic, situated in the north-west corner of the building constructed in opus caementicium and opus reticulatum. The stratigraphic analysis of the walls indicated a succession of interventions that modified the position of the entrances, some of which were blocked. The north-eastern sector of the building was occupied by a large room, partially excavated, and by a cistern that fed a fountain situated outside where the north-south road met the forum area.

In the first place, the excavations (trench 22, 12 × 10 m) identified and documented the old edge of the 20th century excavations. The stratigraphy was somewhat disturbed down to the crest of a new wall, which was on the same alignment with the group of rooms already seen on the north-western part of the building. On the east side of the trench there was a wall collapse, characterised by many rubble fragments that still had the plaster facing attached. A marble female head was found here, in secondary deposition in a dump of rubble, with the back of the head facing upwards.

The treatment of the hair seems similar to that on portraits of Faustina the Younger, and therefore can be attributed to a production of the second half of the 2nd century A.D.