The culture of Su Carroppu represents the earliest phase of the Neolithic in Sardinia (6th millennium BC). Since 1968, the excavations carried out by archaeologists Enrico Atzeni and Gérard Bailloud in a rock shelter on the limestone hills in the territory of Sirri called Su Carroppu, found various coarse ceramics of a black-grey color decorated with the imprint of Cerastoderma edule along with tools made of obsidian from the Monte Arci.