The necropolis of “domus de janus” at Ispiluncas is situated on the mid slope of the basalt plateau of Abbasanta, in the vicinity of some tufa outcrops. It faces south/south-east towards the fluvial plain crossed by the river Tirso, today the lake Omodeo basin. It is constituted by at least 33 hypogea divided into two groups circa 200m apart form each other. The burials presented different plans so that it was possible to observe tombs with very simple layouts and examples having several chambers (“T” plan, centripetal plan, longitudinal plan). The hypogea were often preceded by a dromos; in some cases the anti-chamber had a semicircular plan with a rectangular chamber, which recalls the layout of the nearby pre-nuragic village of Serra Linta.

In some cases it was clear that the hypogeum was excavated in two different phases. In other cases two adjacent hypogea were joined by the opening of a communicating door. Some hypogea presented chambers on a level below the others of the same structure. The interiors often presented architectural elements reproducing those of dwellings: single slope ceilings with representations of beams or a semicircular lunette. In some hypogea there were traces of plaster and red, white and anthracite grey paint. Several tombs contained a sequence that ran from the late Neolithic through to the early medieval period. Worthy of note is a fragment from a necked vase with anthropo-zoomorphic figures datable to the Ozieri period; the pottery belonging to the Bell Beakeer period presents a complex and particular decorative typology which at present finds no analogies in either Europe or North Africa. The deeply incised decoration tracing a meander motif with uncinate appendages is of particular interest. (MiBAC)