 A Roman town called "Arriaca", possibly founded by a pre-Roman culture, is known to have been located in that region.There is however no archeological proof of its existence, only references in texts such as the "Ruta Antonina", which describe it as being in the hands of the Carpetani when encountered by the Romans.The city, as "Caracca", was incorporated into the Roman province of Hispania Tarraconensis.