The territory of Laconi, the main town in the Sarcidano region, has yielded one of the highest concentrations of menhirs on the Island, dotted over distant areas sometimes several kilometres away. One of the most prolific and significant areas stretches across the slope of Conca Zerfaliu, an elevation not far from the town, in the locality of Corte Noa. There are seven monoliths here, known in Sardinian as perdas fittas (embedded stones), all placed in line except one that slid down into the valley. Their heights vary from one metre twenty centimetres to two metres twenty. Their appearance is ‘proto-anthropomorphic’, i.e. with a mere hint of human features. The figures are sculpted in bas-relief out of trachyte with the “light hammer” technique and their origin, as well as their meaning, is uncertain. It is thought that these menhirs date back to between the 4th and 3rd millennium BC, or that they could belong to a continuation of the same religious horizon in the second half of the 3rd millennium BC. The monoliths probably represented important social figures within the pre-Nuragic peoples, perhaps ancestors, leaders, warriors, heroes or divinities.