The territory of Oschiri, a small town of the province of Sassari at the foot of the Mount Limbara, on the border between Logudoro and Gallura, shows traces dated back to the Neolithic, with a large number of domus de janas, the small cave burials dug into the rock, located on the heights of the area. The most important sites are the necropolises of Malghesi and Pedredu, with 25 and 13 domus de janas respectively, as well as Monte Cuccu, Monte Ulìa and Berre, where are also menhirs and dolmens.
About sixty sites date back to the Nuragic age, including corridor nuraghi, tholos nuraghi, settlements and cult buildings, generally located on the hills. A bronze with the unique shape of a miniaturistic cart with four wheels was found near the Lughéria nuraghe, discovered during excavations promoted by General Alberto La Marmora in the 19th century.
During Roman times Luguido rest station was installed on San Simeone hill, a fortified stop along the roads of the east-west axis. In addition to the rest station, there was the castrum which hosted the III cohors Aquitanorum, the Ligurum Equitata and the I Sardorum.
The very particular complex of Santo Stefano remains, instead, difficult to classify, also due to the absence of systematic studies. It is traditionally considered a pre-Nuragic megalithic site, but other scholars place these geometric carvings in the Byzantine era.