The Roman legions first entered the area under Decimus Junius Brutus in 137–136 BC, but the country was only incorporated into the Roman Empire by the time of Augustus (29 BC – 19 BC). The Romans were interested in Galicia mainly for its mineral resources, most notably gold. Under Roman rule, most Galician hillforts began to be – sometimes forcibly – abandoned, and Gallaeci served frequently in the Roman army as auxiliary troops. Romans brought new technologies, new travel routes, new forms of organizing property, and a new language; latin. The Roman Empire established its control over Galicia through camps (castra) as Aquis Querquennis, Ciadella camp or Lucus Augusti (Lugo), roads (viae) and monuments as the lighthouse known as Tower of Hercules, in Corunna, but the remoteness and lesser interest of the country since the 2nd century of our era, when the gold mines stopped being productive, led to a lesser degree of Romanization. In the 3rd century it was made a province, under the name Gallaecia, which included also northern Portugal, Asturias, and a large section of what today is known as Castile and León.