Poggio Rota Stone Circle was discovered in recent times (2004) by an Italian researcher Giovanni Feo, an Etruscan civilization expert. The studies conducted at the site, which also involved researchers from Italian universities assumed that the megaliths of Poggio Rota were built towards the middle of the third millennium BC by the Rinaldone civilization (4000-2000 BC).Poggio Rota Stone Circle is the only existing monument of this kind in Italy in good condition. Another the Little San Bernardo Cromlech, in Valle d'Aosta has completely collapsed.An archaeoacoustic approach similar to that used at other stone circles in Portugal was used. We tested this structure to see if any natural sound phenomena or resonance were present, because it is understood that some ancient structures have been specially modeled to influence the mind through the use of sound to create an altered state of consciousness. In previous researches we demonstrated that there is a relationship between mechanical vibrations and brain activity in some ancient temples. The resonance phenomena results of 91Hz obtained by the use of a round drum were of interest, because similar results were also found in Cividale del Friuli Hypogeum in North-Italy and at ancient temples in the UK and Ireland by other researchers. A strong radioactivity inside the stone circle dangerous for human health (until 1,77 μSv/h) was also discovered to be present.
