The territory of Sant’Andrea Frius, a municipality of Trexenta in South Sardinia, is located in a mainly hilly area. It was probably inhabited since the Neolithic era, but the most significant settlements date back to the Bronze Age. There are several archaeological remains from the pre-nuragic and Nuragic period, including the nuraghe Piagas o Mannu on the border with Donori, the nuraghe Monte Uda, Montroxiu and Perda Niedda.
The modern center, built on the remains of a Punic settlement, rises in an area used for a long time in Roman era, as an outpost for controlling the surrounding era.
The votive deposit of Linna Pertunta is very important; it is an underground room made with squared stone blocks. The findings discovered in this deposit cover a wide span, from the fifth century BC until the High Medieval period. Most of them, however, are from the Punic and the Roman era: there are numerous anatomical terracotta ex-votos (hands and feet), Punic and Hellenistic inspired figurines, local taste masks, currently exhibited in the Musei Nazionali di Cagliari.
From the Roman period there are some remains of ancient country villas (villae rusticae). In 1936, moreover, two burials of Roman Age were accidentally discovered; they contained rich funerary equipment, from the third century AD. The funerary goods consisted of small glass containers, ointment jars, a bronze bracelet, ceramics of local production, including a particular type of small pitchers, oil lamps and cups.
