Metaurus fl. (Metauro river) flows from near Monte dei Frati in the Apennine Mountains to the Adriatic Sea. The Metaurus was the site of two key battles in antiquity. The first, in 207 B.C., saw the defeat of Hasdrubal Barca by the consuls Marcus Livius Salinator and Gaius Claudius Nero. The second, the Battle of Fano, saw Aurelian defeat the Alamanni in A.D. 271.