This campaign enlarged the excavation area outside the building built of dressed Albarese stone blocks (perimeter walls 3000-3001), uncovered during the 2008-2009 excavations, which seemed to be linked to the settlement’s curtain wall on the west side.

Immediately below the humus and a very compact layer of soil (US 3202), a cobbled surface (US 3204) emerged that abutted the external face of wall 3001. The cobbles levelled the uneven surface caused by the presence of earlier structures (USM 3206) below it and of at least two accumulations of large Albarese stone blocks (US 3203) and medium to small blocks (US 3208), compatible with the construction material of building 3000-3001. Therefore, these accumulations are traces of the building’s destruction, which was followed by the leveling of the area by the laying of the cobble surface 3204. The pottery found within this layer was of late medieval date.

It is possible that this phase related to the building with walls about 90 cm thick, which occupied the centre of the plateau (area D).

During the 2010 campaign its southern perimeter wall, USM 4200, was uncovered, of which only one course was preserved above the foundation offset. The trench opened outside the wall showed that this substantial structure, constituted by facings in blocks of Albarese stone and a core bonded with lime mortar, was built in a foundation trench cut in the bed-rock, which on this part of the plateau emerged at a very high level. The scarcity of the archaeological deposit outside wall 4200 (US 4201) made it impossible to define a precise chronological horizon: the pottery fragments were very small and covered a period running from the late medieval period to the modern era. This situation was similar to that documented in the area of the well. Clearly, the intense use of the site until recent times had caused greater damage to the archaeological stratigraphy and structures at the centre of the plateau than it had to the deposit along the sides sloping down to the change in height that marks the edge of the site.

During the preliminary operations to enlarge trench C, on the western slope of the site, traces were uncovered showing the levelling of the terrain through the creation of a rudimentary flight of steps with Alberese blocks bonded with mortar. The aim appeared to be to create an access ramp to the site. It was delimited on either side by a kerb of Alberese or sandstone (reused?) blocks, some squared, which confirmed that the construction was intentional. As this structure lay immediately below the humus, it was not possible to suggest a date: it will only be possible to define a relative chronology by linking this structure to the walls in the adjacent trench C.