The geo-referenced points that had been positioned across the island on various occasions were collated. Excavation of the area extended to the north of Bertolone’s area continued. Here in 2008 a disturbed sandy silt soil with the presence of recent, but not contemporary, intrusions was identified below circa 20 cm of humus. The underlying stratigraphic unit was uncovered comprising a silty-clay, slightly sandy with occasional gravel and abundant cobbles of varying sizes with a particular concentration in the eastern area. The disturbed stratigraphy was indicated by the presence of imbrices and bricks which, however, were not very recent. Given the proximity of trench A (2007 campaign) to the Museum (ex church of S. Biagio) and the medieval finds, these fragments may have been part of the church roof or repairs to the latter. Various interventions with dumps were documented by post-holes, some with stones to act as wedges for the posts, trenches and by the and from the underlying and successive contexts 202-341 and 203.The materials were physically heterogenous with various degrees of drift; this was probably dumped earth containing materials dating to the Late/Final Bronze Age associated with rare brick fragments whose presence may be due to movement by roots or animal burrowing.

The final US excavated was a land reclamation layer. At the top of the layer there were some stones, their number increasing at the base. The stones presented various alignments. A first analysis suggests this material dates to the late/final Neolithic period. The excavation terminated in correspondence with large structured cobbles and US 417.

Using a Multibeam device a geo-referenced bathymetry survey was made of the stony feature surrounding the bank of the Isolino to the east, north and west (the east and north areas were partially investigated in 2006) and continuing to the north-western extremity of the island with a ramification on a south-north alignment towards the Biandronno shoreline. In the areas investigated (east and north) Neolithic pottery and lithics were present on the surface of the stony feature. The readings with the echo-sounder were undertaken at 10 × 10 cm. In fact, the feature forms a monumental plateau extending into the lake at between 16 and 26 m from the present shoreline and terminating in a scarp. The height of the scarp’s summit is constant around the island at about 237.20 m a.s.l.