The 2011 excavations completed the exploration of the keep, at least in the areas where this was possible, revealing the presence below the castle’s first phases, of a nuragic complex. This was constituted by a nuraghe, whose circuit was only partially visible, at least one badly-preserved hut, and a few patches of stratigraphy containing a large quantity of pottery. Excavations began in the borgo, in areas where aerial photographs indicated the presence of modular structures, easily identifiable as residential areas. Here, the removal of the grass revealed a series of walls relating to the residential zone associated with the keep. A small part of this area had been investigated previously. In 2000, between the first western tower and the San Gavino gate, in 2008-2009 the zone along the borgo’s perimeter wall, including the area between the first western tower and the point where the wall met the keep’s northern bulwark, and a 2.5 m strip on either side of the wall.

It was decided to excavate two different parts of the western sector of this residential area. Characterised by a concave slope with partially visible walls on the north and south parts, it was probably served by a road leading from the West gate to the plateau summit. Two rectangular residential complexes were uncovered, divided into several rooms arranged in sequence. Both were built at the same time, a hypothesis confirmed by the uniformity of the construction techniques and materials used. One of the two complexes comprised five rooms, built along the hill slope and linked by steps. The first room was probably partially open and used for domestic and craft-working activities. The second structure had three rooms and was served by an internal entrance towards the south. On the northern side was an aperture that was probably a window. On this side, the room was also sheltered from the wind by the bedrock itself, which in this point was at a higher level than the floors of the rooms.

Based on the pottery finds analysed to date, the occupation phases can be attributed to a period between the beginning of the 14th and the first half of the 15th century. The pottery assemblage comprised imported glazed wares, such as archaic majolica, Hispanic-Moorish, polychrome graffito, and Neapolitan proto-majolica, There was a prevalence of open forms among the latter wares, which is interesting particularly for polychrome graffito ware. The rooms were probably part of a larger residential complex, built at the same time as part of a project to populate the area.