Which river crossed the city which was at 40 km southwest from Fabro?
Fabro: Fabro is a "comune" (municipality) in the Province of Terni in the Italian region Umbria, located about 40 km southwest of Perugia and about 60 km northwest of Terni. Perugia: Perugia (] ; ) is the capital city of both the region of Umbria in central Italy, crossed by the river Tiber, and of the province of Perugia.
Tiber