Outside the gates of the small village of Ollastra, in the heart of the historical region of Planargia and a short distance from the Tirso river and the surrounding reliefs, the Tres Bias nuraghe, also known as the Trobias nuraghe, presents itself as an interesting single-tower protohistoric site.
Immersed in a rural and pastoral context of great charm, the monument shows the tangible signs of the passing millennia, with the body of the original tower partially reduced by an imposing accumulation of collapsed boulders.
However, archaeological investigations conducted in the area have revealed the complexity of the site, highlighting the presence of an outer wall and the remains of a small hut village around the central core.
The excavations have also yielded extraordinary documentation regarding the prolonged habitation of the complex, which did not end with the close of the Nuragic age but continued to live on and be reused in historical times, as evidenced by the fine Punic and Roman artifacts that emerged among the structures.
