The image that comes to mind as you observe it is that of an archaic stone lock, obtained from the rock, who knows how, also considering the absence of a construction element typical of similar structures built in Sardinia. The precision and care with which the well temple of Coni was built is ‘living’ evidence of the importance of the worship of the waters among the Nuragic people. It was built in the locality of the same name on the slopes of the Valenza hill, just over a kilometre from Nuragus, in a ‘sacred’ area where thousands of years of traces ranging from the Bronze Age to the Middle Ages coexist. Basalt blocks were utilised using the opus technique for the construction of the sacred well.