The Battle of the Trebia occurred on the left bank of the Trebbia River between Carthage and Rome.
== Geography ==The source of the river, the Trebbia river spring, is in the Ligurian Apennines on the south slopes of Monte Prel, to the south of Monte Antola in the comune of Torriglia, Province of Genoa
 Etruscan elements began in the Iron Age, about the 5th century BC

