Santu Antine (in Torralba) is one of the largest nuraghi (ancient megalithic edifices) in Sardinia. It is located in the centre of the Cabu Abbas plain.
The main structure was built around the 19-18th century BC, and the other parts of the nuraghe date back to the 17-15th century BC.
The main tower originally reached a height of 23-24 metres and contains three tholoi chambers on top of each other. The central tower with diameter of 15 metres is 17 metres high. Santu Antine is made of huge basalt blocks. It has 3 floors. The top floor is now gone. Some 27 meters long corridors built with the corbel arch technique can be observed inside of the Nuraghe, superimposed on two floors, the Nuraghe was provided with three wells.
Near the Nuraghe lie the remains of a Nuragic village.