It has a classic structure: the base room (A in the plan) is wide and has three niches arranged crosswise; also the corridor has a niche. The perfect spiral-shaped ramp starts from the left side of the corridor, goes up clockwise to the upper room, which is small and simple, then reached the flat top, today broken off. On the contrary the trilobate bastion, buil later, has archaic features, among which the three high and narrow rooms (B, C, D) and the steep staircase of the rear room.
To reach it, one has to exit and enter again through the secondary entrance, or go up to the top floor of the bastion and down again through a complex system of stairs. In additon to the main rooms, the central tower and the bastion include at least three small pits entered from above, used as storerooms to conserve foods or other materials. Out of the bastion there is the antemural, which is a thick wall with straight segments and projecting towers.
Instead of enclosing the front and the main entrance of the bastion, the antemural stretches out backward to the north and west, including a sort of narrow rear courtyard (E).
The two towers have round rooms (F, G), which are pierced by many small windows or loopholes. At the base of the western tower (F) there is a water cistern. The eastern and southern sides of the antemural have been later destroyed or maybe never completed. In front of the façade of the bastion there is an imposing round building (H), once perhaps connected or to be connected with the antemural.
Probably it had important and special functions, as is suggested by the two opposite entrances (the larger one open to the exterior, the smaller open to the bastion), the two large wall niches, the four lockers and the five windows or loopholes.
Around the nuraghe there is a huge settlement, about 3.5 hectars wide. Only a small part of it has been excavated. In several areas one can observe the ruins of the nuragic dwellings and, above all, the remains of the houses of late-punic, roman republican, roman imperial, late-roman and byzantine age.
Author of the texts: Dott. Alessandro Usai