The nuraghe Santa Sabina is a single-tower nuraghe with a chamber and a tholos or dome-shaped roof, bordered by three niches arranged in a cross, and a staircase passage.
The tower, with a circular plan, has a diameter of 12.6 metres at the base and 9.85 metres at the top. It is eight metres high and made up of 17 rows of large basalt stones, finely worked in the middle and upper rows but rough-hewn in the lower ones.
The south-facing entrance opens onto a corridor, slightly splayed outwards, and has projecting walls and a ceiling that rises towards the entrance to the chamber.
In the right wall of the corridor, a passageway niche opens up with a curvilinear internal profile, access to which is through a trapezoidal-shaped entrance around 1.5 metres high with an architrave.
Opposite the niche is the staircase to the top of the nuraghe. On the north-west side, there is a loophole, each side of which measures around 30 cm.
The circular chamber, the tholos roof of which is intact, is 8.35 metres high with 18/19 rows of medium-sized stones.
There are various traces on this site of a village occupied at least until the Roman era. Around 200 metres to the south-east, the tombs of two giants with the same name can be admired – Santa Sabina I and Santa Sabina II. On the opposite slope at around 400 metres lies the evocative nuragic well of Su Cherchizzu, which was probably closely linked to the nuraghe in the past.