The site, brought to light in 1969, extends over an area of one hectare and reveals one of the most interesting archaeological sites in Europe. Delightfully marked, significant moments from almost five thousand years of history, from the ancient Eneolithic period to the present days. 

Various structural stages can be identified: the first one consisting of the alignment along a route going from north-east to south-west, of 22 large poles in cylindrical pits, where the ashes of Aries (3000-2800 B.C) were found.

The second one, that took place after a consecration or foundation rite done by ploughing, consisted of the attachment of more than 40 anthropomorphic stelae, linked to the sowing of human teeth (2750-2300 B.C).

In the last stage (2300-2000 B.C.) new elements are introduced that were no longer destined for the cult of the living but for funeral functions: that is the period of the construction of some megalithic tombs, probably members of important families in the community, built completely above ground and that, as with the structures in the previous stages, evoke a significant astronomical tendency. 

For more than two thousand years, the area was used as a cemetery, being then progressively abandoned with the approach of the Bronze Age. The presence of Gallic tombs on an alluvial layer from the Iron Age as well as Roman tombs on the upper digging levels where the Romanesque church dedicated to San Martino stood, further confirmed the interesting phenomenon of the persistence of its funeral usage.