Forum Cassii was an ancient town of Etruria

Etruria

Etruria—usually referred to in Greek and Latin source texts as Tyrrhenia—was a region of Central Italy, an area that covered part of what now are Tuscany, Latium, Emilia-Romagna, and Umbria. A particularly noteworthy work dealing with Etruscan locations is D. H...

, in what is now central Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

, situated on the Via Cassia

Via Cassia

The Via Cassia was an important Roman road striking out of the Via Flaminia near the Milvian Bridge in the immediate vicinity of Rome and, passing not far from Veii traversed Etruria...

, with the formation of which, from its name, it was certainly connected. It is known to us from the Itineraries, which place it 11 Roman miles beyond Sutrium (modern Sutri

Sutri

Sutri is a town and comune in the province of Viterbo, about 50 km from Rome, and about 30 km south of Viterbo. It is picturesquely situated on a narrow tuff hill, surrounded by ravines, a narrow neck on the west alone connecting it with the surrounding country.thumb|220px|Entrance to the...

), between that place and Volsinii

Volsinii

Volsinii or Vulsinii , is the name of two ancient cities of Etruria, one situated on the shore of Lacus Volsiniensis , and the other on the Via Clodia, between Clusium and Forum Cassii...

, and 44 miles from Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

The distinct traces of the Via Cassia enable us to place it with certainty about 2 km northeast of Vetralla

Vetralla

Vetralla is a town and comune in the Province of Viterbo, in central Italy, 11 km to the south of that city, located on a shoulder of Monte Fogliano.-History:...

 (in the modern-day Province of Viterbo

Province of Viterbo

The Province of Viterbo is a province in the Lazio region of Italy. Its capital is the city of Viterbo. It is bordered to the north by the Province of Grosseto and Siena, by the north-east with the Province of Terni and Rieti, in the west by the Tyrrhenian Sea and south by the Province of Rome.It...

, Lazio) where an ancient church still retains the name of Santa Maria in Forcassi, and some portions of Roman

Ancient Rome

Ancient Rome was a thriving civilization that grew on the Italian Peninsula as early as the 8th century BC. Located along the Mediterranean Sea and centered on the city of Rome, it expanded to one of the largest empires in the ancient world....

buildings are still extant. The inhabitants migrated during the Middle Ages to the neighbouring village of Vetralla