It is now ascertained identification of Castel d'asso with ancient Axia mentioned by Cicero in the speech Pro Caecina. The city, already existing in archaic, as evidenced by the discovery of some architectural terracottas dating to 550-530 BC, recalling the similar and well more known specimens of plates found at Acquarossa, flourished especially from the 4th century b. c., as a minor Center of the tarquinian territory. In III BC is subdued, as the entire area, to Roman rule, but, due to its location between the via Clodia and the via Cassia, continues to enjoy a degree of prosperity.
The first Imperial age starts to decline, until the abandonment of the site in late Antiquity, then again inhabited in the early middle ages. Along the north side of the Valley in front of the medieval castle has concentrated a large number of tombs on three-sided orders; the cemetery was in use from the second half of the IV until the middle of the 2nd century BC Between the best-known Large Tomb, named for its large proportions and famous for the exceptional three doors; with a roof tiles carved externally on sottofacciata Bay, the Oberoi, semidado type with sottofacciata area, dating from the mid-3rd century BC and the middle of the 2nd century b.c. or the tomb of Tetnie, a family known to Vulci.