In the area of the municipality of Sorgono, the most important center of Mandrolisai, in the province of Nuoro, there are several prehistoric traces, mainly of the Nuragic age.
The most relevant archaeological site is the complex of Biru ‘e Concas.
Located on a small hill, about ten kilometers away from the village, it is characterized by the largest concentration of menhir (large monoliths embedded vertically in the ground) in Sardinia and one of the most important of the entire Mediterranean Sea. In fact, there are nearly 200 menhir, placed individually, in couple, in groups of three, in circle or in alignments of 20 standing stones. Many of these were found shot down on the ground. Some of them are aniconic or protoanthropomorphic, more ancient than the others and summarily made, others are finely crafted and anthropomorphic. The menhirs are part of the phenomenon of megalithism, which affected the whole word during the prehistory. They are characterized even today by a mysterious meaning; it is believed that they were sacred stones, perhaps phallic symbols related to fertility and fertilization of Mother Earth, or ancestors, heroes or mythologized warriors.
The archaeological complex is dated between the Recent Neolithic (4300-4000 BC) and the Chalcolithic period (3300-2300 BC).
The domus de Janas of Perdonigheddu and Santu Luisu also date back to this period.
The Talei site is also very important: the main building of this site is a protonuraghe with a corridor, built with large granite blocks and with an approximately elliptic plan. Around the nuraghe were found the remains of a village, several circular huts where archaeological remains dating back to the Middle Bronze Age have been discovered; presumably at the end of the Bronze Age the site was abandoned. The tomb of the giants, located just a few hundred meters away, was severely damaged due to illegal excavations. The area surrounding the nuraghe is characterized by some menhir.
The area of Sorgono is full of Nuragic sites. Among the nuraghe there are the Calamaera, Costa ‘e Feurra, Crastutorro, Crebos, Crecos, Cungiau ‘e su Creccu, Funtana Frida, Ghenna ‘e Pranu, Grughe, Iscalas, Lò, Niu ‘e Crobu, Orrubiu, Pastoreddu, Prànu, Santu Giàccu.
We must also remember the tombs of the giants of Cungiau ‘e Tore, Funtana Morta, Ghenna ‘e Pranu, Pastoreddu, Santu Perdu, Serrazzargiu e Trodolossài.
The National Archaeological Museum of Cagliari exhibits two bronze figurines, from Sorgono, that represent a soldier with rapier and shield on his shoulders and a praying shepherd.