Passage: Hasdrubal survived the battle with most of his elephants and cavalry, and a few infantry (mostly Iberians). The Roman pursuit was not vigorous enough to repeat their success after the Battle of Cissa. The Romans managed to storm the Carthaginian camp, after Hasdrubal had hastily evacuated his soldiers. The provisions and booty fell into the hands of the victorious Romans. The shattered Carthaginian army retired to Cartagena, leaving the Romans firmly established south of the Ebro.

Question: Where did the Carthaginian's retreat to after defeat by the Roman's?
Cartagena