Nuraghe Don Micheli
Nuraghe De Planu or Don Micheli, which, on Giovanni Spano’s opinion, with nuraghe Attentu and nuraghe de sa Surzaga delimited the borders of Ploaghe territory, after the building of Saint John Baptist Foundation, is inside the town.
It has a single tower and is built in basalt boulders in horizontal rows. There is an open three-stepped staircase, a niche used as entrance and a round room with three more niches and a little one above.
Even though half ruined, it is well kept, and its diameter is 12.50 metres and its wall thickness is about two metres each. The tower entrance is oriented south-west. There still is lintel, broken in its height.
To the round room, whose diameter is 3.80 metres, one can enter through a passage 4.5 long and blocked for two metres (Fiori, 1966).
Even this nuraghe was studied and dug by Spano. In 1875, the archaeologist performed a stratigraphic excavation on it. Two metres deep they found fragments of pots with their handles variously shaped, and a matrix excavated in their middle; one metre deep they found fragments of crockery, human bones and a grave (Fiori, 1966).
In 1960, during an excavation performed with stratigraphic way two metres deep, by Maetzke, they found, in the deeper layer, fragments of smooth and decorated pots, a bronze stab, some fragments from a cooking tripod, some comb-decorated pans and little pots, coming from a period included between XV and IX century (Fiori, 1966).