The opening of a narrow trench (0.80 m) for a new sewer pipe along the via Industria and on the land to its west, made it possible to check the extension to the south, beyond the railway station, of the ancient town, and state of preservation of the insulae and related deposits,heavily disturbed by a series of interventions through time. The trench was on a north-south alignment and after a first stretch of 6.5 m in which no structures were present, a series of 13 masonry foundations were exposed. Oriented east-west, they were followed by another gap of 7.5 m, perhaps to be interpreted as an open area or a road and, at variable distances, other walls forming rooms without floors, inside which, occupation levels were identified in at least four cases.

The succession of series of walls alternating with spaces without structures, can be attributed to a sequence of insulae and decumanae but the fact that it does not correspond with the urban module 35-40 m proposed for Industria, makes the insertion of the numerous structures that emerged from a scan of regular insulae more problematical. However, a probable road bed whose southern edge is about 147 m from the northern edge of the insula south of the decumanus, known thanks to excavations in the archaeological area, could correspond to three insulae of 40 m plus three decumanae of 9 metres each. This road could be the southern town limit, never previously identified, even though further to the south a wall and a burial in an earth grave were exposed. The latter was on a north-south alignment and no grave goods were present; it is probably early medieval in date to be associated with the nucleus identified in the sacred area and with the Lombard burial found along the decumanus, in the south-eastern corner of the Serapeum. A second trench, aligned east-west, was opened along the southern edge of the archaeological area. Here, to the west of via Industria, at 8m from its intersection with the north-south trench and as far as the point where it intersected an orthogonal wall, intermittent stretches of an east-west wall 7.70 m long were uncovered. At about 39 m from the intersection, there was an isolated wall on a north-south alignment. The absence of archaeological deposits in the final western 130 m of the trench suggests that the southernmost part of the town was concentrated in the central area.