Named after ancient river Clanis, the valley appears to have been under the control of towns such as Clusium, Arretium, Curtun and a series of satellite villages since Etruscan times. The latter certainly included proto-settlements which over the centuries seamlessly developed into towns and cities that would later thrive in the Middle Ages. Major archaeological sites and finds across the valley include the Etruscan burial sites at Casalta and Lucignano, recent urban finds made in Castiglion Fiorentino, 19th century finds from Marciano (including the well-known sculpted torso of a warrior now on display in the Archaeological Museum in Arezzo) and Monte San Savino (the birthplace of one of the best known and celebrated Arezzo-born archaeologists, Giovan Francesco Gamurrini). In Roman times, the valley appears to have been a fertile plain densely scattered with agricultural settlements and criss-crossed by a dense network of roads and tracks; except for the passing of Hannibal’s army, the valley was affected by only a limited number of serious events. The Valdichiana was also one of the every first areas in Italy to assimilate the newly introduced Christian faith and culture.