The eighth excavation campaign on the site of Trebbio (Sansepolcro – AR) took place in July-August 2009. The investigation concentrated on the area opened and partially excavated during the previous years, denominated area VI.

The main excavation worked on the area of cobbled surface US 409. A second and deeper level was exposed characterised by larger cobbles and concentrations of large fragments of terracotta and faunal remains that were even denser than in level I. It is possible to interpret this as the result of levelling of the collapsed material from a number of structures, as attested by the find of a strip of cobbles on a north-south alignment on its eastern edge, which may be interpreted as the remains of a foundation.

To the south-east of the cobbled area excavation of US 413 continued. This exposed a dense make up constituted mainly by cobblestones of various sizes, terracotta fragments and animal bones. It was on an east-west alignment, its width varying between 80-90 cm and 1.10m, and the preserved section reached a length of circa 6.50 m. The excavation revealed the presence of two layers of material, with large terracotta fragments often showing clear signs of exposure to the weather. The Construction method, examined by the excavation of a trench, suggests that this was a sort of modest road, perhaps a pedestrian pathway, that was periodically remade.

In proximity to UUSS 409 and 413 a pit appeared which contained materials that seem to be of the same date as the US mentioned (full or early 7th century B.C.). Therefore, it is possible that the succession of actions of accumulation and removal of material constitute a single cycle of activities over a relatively short time span.

The excavations demonstrated that the area of Spinellina, throughout the chronological arc of its occupation, saw intense construction activity which, in part, involved the rebuilding of the structures on the same alignment, although sometimes using different techniques. On the contrary, part of this activity involved the obliteration of pre-existing structures with the subsequent change in use of the zone involved. Such dynamics were particularly evident when the wall foundation US 400 was dismantled revealing a pre-existing construction phase below it constituted by rows of small post holes. In another zone it was possible to reconstruct a structural alignment constituted by large posts (including those uncovered in 2008), later removed, the holes from which were below the dumped remains of burnt habitations.

This building activity appeared to have two phases: the first dating to between the late 8th century and the 7th century B.C., the second – in part comprising rebuilding and obliteration of pre-existing structures – dating to the 6th century B.C. Thus, at least for the period between the end of the 8th century and the mid 6th century B.C., the intense and prolonged character of activities in this area of the site of Trebbio was confirmed and to which evidence for the building of infrastructures (possible road) also corresponded.