Lake Vadimo (Lat. Lacus Vadimo) was a small, partially dry, lake of volcanic origin whose waters now are almost fully underground best known as the theatre for the battles between Etruscans and Romans in 310 and 283 BC, in both of which the Romans were victorious.
The Roman domination made the area a municipality of Horta (also Hortanum).
- Cf. The True Story of Lake Vadimo (in Italian) - also called Lake Vadimone, or in Italian: Lago Vadimone.
- The area was inhabited from the 6th century BC and called *Hurta: cf. Chiesa, Tarquinia: archeologia e prosopografia tra ellenismo e romanizzazione, 2006, p.267. — as testified by the findings in a necropolis nearby, now preserved in the Vatican Museums.
- John Murray, A dictionary of Greek and Roman geography, Volume 1, 1873, p.1091
- Pliny the Elder. "II:209". Natural History.