Discovered in 1889, remnants were found for the first time in Sardinia with particular characteristics that led to being able to define the culture of Bonnanaro thanks to this prehistoric monument. The name of the cultural facies comes from the country of origin of the site and coincides with the early Bronze Age (1800-1600 BC), on the threshold of the Nuragic Age. The necropolis at Domus de Janas in Corona Moltana was excavated in a calcareous outcrop on the edge of a small plateau two kilometres from Bonnanaro, the centre of Meilogu-Logudoro 35 kilometres from Sassari, the history of which dates back millennia and which is famous for being the ‘village of cherries’. The ceramic artefacts of Bonnanaro no longer bear the over-abundant decoration that characterised the previous ‘Beaker culture’. The hypogeal sepulchres ‘lived’ from the late Neolithic period (3200-2800 BC), with the early Bronze Age being the last period in which they were used. In practice, the deceased ‘pre-Nuragic’ people were buried here for 1500 years.
To reach Tomb I from the village, there is an overpass above Highway 131 then a dirt road to travel along for 700 kilometres by car plus 100 on foot. This is the best-preserved ossuary, the most important and ‘showy’ of the five that comprise the necropolis. The other four hypogea are about 600 metres apart and have a poorly-developed planimetry – the cella is accessed via a cockpit or a short corridor (dromos). Tomb I is the most articulated, with a rectangular antechamber that is four meters in length, more than two and a half wide and one and a half high, covered with a sloping roof. A door in the back wall, surmounted by embossed decorations (perhaps taurine horns), leads to the main room with an irregular layout, unusually smaller than the antechamber (three metres by 1.80). Eight hemispherical cups for votive offerings were excavated at the base of the walls. Inside the room, a funeral deposition was found intact: two inhumed individuals with a set of 18 vases and a bronze ring, the first attestation of the ancient Bronze Age and the first sign of what was to become the Bonnanaro culture. Of Tomb II remains only a cella that expands out from a small room. Above the entrance door of Domus III there are the ‘regular’ carved horns. Cup marks have also been forged in Tomb IV in the floor and walls. Features of Tomb V are the three niches in the cella.
In the territory of Bonnanaro there are two other Neolithic necropolises, being Pertusos and of Sas Turres. Five Nuraghe structure date back to the subsequent Bronze Age. Ancient religious buildings are connected to the archaeological monuments: Santa Maria Iscalas and Santa Croce, the neoclassical parish church of San Giorgio Magno and the rural sanctuary of Nostra Signora di Monte Arana, overlooking the Nuraghe valley.