The site sits on a modest hillside elevation bordering the Riu Sa Canna on the east side.
The diggings have turned up at least three construction stages. The first stage, during the Middle Bronze Age can just be made out thanks to the later reconstructions. It had a Protonuraghe with an unclear layout. The main structure was then incorporated into a three-foil defence wall, later replaced by another one whose 4 towers are still visible with narrow corridors and an internal courtyard.
During the Recent Bronze Age (second stage) the stronghold was expanded with at least one tower and re-enclosed. A coping was created in the upper part with angular towers. The construction of a large tower (9.30 m in diameter), with at least 12 crenels, ensured the defence wall was reinforced.
The third stage, near the end of the Final Bronze Age, saw the partial dismantling of the fortress and the construction of a village. The compound took on the role of sanctuary. One of the elliptical rooms still has an altar, a seating bench and two ritual hearths. The altar is an important example of a dew tank mimicking a Nuragic stronghold.
The site was used up until the Judicate period.
Leave Villanovafranca along via Giuseppe Verdi and follow it for about 1.1 km. Turn right towards Baccu su Ergiu. After about 100 metres take the road on the right leading to the Nuraghe.
