San Vito, Nuraghe Asoru

The nuraghe is located in a valley basin surrounded by hills sloping down towards the Colostri Sea, at an altitude of 32 m above sea level.
The building consists of a keep to which, in later times, a three-lobed bastion with a concave-convex trend was added that enclosed a small courtyard. The set measures 24 m on the N-S axis and 16 m on the O-E axis.
The keep, with a circular plan (9 m in external diameter), has a maximum remaining height of about 10 m. The wall work consists of medium-sized porphyry blocks, cut out and arranged in regular rows. The entrance to the monument (cm 80/40 x 80 in height), facing S-SE, is surmounted by an architrave (m 2.05 x 0.40 x 0.65 deep) equipped with an exhaust window. The rear corridor, partially cluttered with stone, folded inwards (the width goes from 80 cm at the entrance to 2.80 m at the bottom) has projecting walls and a tabular closure. In the left wall of the corridor, the door to the stairwell opens, which is unusable due to the collapses. The room, without a roof and cluttered with stones, has a circular plan (diameter of 4.70 m on the collapse plane) and a remaining height of 7 m.
Noteworthy is the fact that the walls visible inside the room are those of the outer wall, since the inner wall is mostly collapsed.
The rampart, irregularly shaped, surrounds the keep with various thicknesses (from a minimum of 1.50 m to a maximum of 9.50 m), pronounced in soft convexity at O and in the arc from N to E. The entrance, facing S, collapsed, leads to an opening 5 m long and tumbling inward (from 1.30 m to 80 cm towards the bottom), with a trunk-ovial section. In the left wall of the annite one can see, among the collapses, a niche.
The courtyard, three quarters of an ellipse, measures 4.50 x 3.40 m. It overlooks the entrances to the keep and, although no longer visible because they are obstructed by collapses, those of the secondary towers. The wall work of the bastion is preserved for a maximum height of about 5 m in SE (13 rows) and is different from that of the keep; in fact, the boulders are worked with more care and the arrangement in rows is more regular.

History of studies
The nuraghe has been reported in studios since the middle of the last century.

Bibliography
G. Lilliu, The civilization of the Sardis from the Paleolithic to the Age of the Nuraghi, Turin, Nuova ERI, 1988;
M. Sequi, Nuraghi: a manual to learn about 90 great megalithic towers in Sardinia, Robbiate, Multigraf, 1985; G. Lilliu, I nuraghi. Prehistoric towers of Sardinia, preface by A. Moravetti. Nuoro, Ilisso, 2005, pp. 110-111, 240-244, 288-293, table. XVII-XXI.

How to get there
From Cagliari, take the SS 554. In the vicinity of Quartucciu, after the first crossroads, turn first to d. then to s., on the overpass, and take the SS 125. The only inhabited centers that can be crossed are San Gregorio and San Priamo. Just before Muravera, at km 51, adjacent to the SS 125, the monument is well marked and easy to access.