Standing in a dominant geographic position, at 4 km from the town of mandas, the nuraghe Bangius (or Su Angiu) is of the complex _tholos_ type. It was arranged in four lobes (2m high) on a straight-curved layout, with short curtain walls linking the towers. At the centre of the structure area were a small L-shaped courtyard and a small circular tower A, functioning as the keep. Of the peripheral towers, the northern one, B, is the largest and must have functioned as the main tower. Tower C is illegible. Towers D and E on the western side are linked by a short wall. The entrance to the quadrilobed complex was probably located in the south/south-eastern courtyard. Tower B is distinguished from the other peripheral towers not only by its size but also by the volume of the marl stone blocks, almost polyhedric but with the surface that was set into place levelled and having a rounded exterior profile. It is possible that on the western side of the polylobed structure there was the original line of an advance wall, however, due to the many layers of re-use, this is very uncertain. In 1974 numerous buildings of the archaic settlement emerged in a vineyard belonging to the Corda-Argiolas farm. Excavations revealed a small cult area, perhaps linked to the small 5th century B.C. _tophet_, and a series of multi-roomed structures of archaic date overlain by Punic and Roman walls. As at the site of San Sperate, a stratigraphic sequence emerged with a level containing pottery decorated with painted bands dating to the mid 6th century, imported from eastern Greece and imitated; an end of the 6th-beginning of the 5th century B.C. level containing imported Attic Black-figure ware and pottery with banded decoration. The archaic phase (end of the 7th-beginning of the 5th century B.C.) was preceded by occupation of the Orientalizing period (8th-end of the 7th century B.C.) attested by fragments of pottery with stamped decorative motifs. On the western side of the nuraghe there were imbrices and many fragments of sigillata ware including an African type lamp with an impresses circlet motif on the shoulder (5th-7th century A.D.) together with late Republican material (Black Glaze ware, “sack” amphorae with thickened rim and internal cordon). (MiBAC)