 From other sources, it seems that Bolanus had possibly dealt with Venutius and penetrated into Scotland, and evidence from the carbon-dating of the gateway timbers of the Roman fort at Carlisle (Luguvalium) suggest that they were felled in 72 AD, during the governorship of Cerialis.Nevertheless, Agricola played his part in the west as commander of the legion XX Valeria Victrix, while Cerialis led the IX Hispania in the east.In addition, the Legio II Adiutrix sailed from Chester up river estuaries to cause surprise to the enemy.