Hadrian’s Wall – English History

In A.D. 120, however, the incursions of the Caledonians, and some indications of unsettledness in the south, called for the presence of the emperor Hadrian. No record exists of his exploits, but from various medals it appears that he drove back the northern tribes, and constructed a rampart and ditch from the Tyne to the Solway Frith, much stronger than that made by Agricola between the Clyde and the Frith of Forth. The remains of Hadrian’s Wall still exist, and attest its massive strength. It was fortified by castles and towns at intervals. Eighteen years later (A.D. 138) in the reign of Antoninus Pius, the then governor of Britain, Lollius Urbicus, penetrated more northwards, and reconstructed Agricola’s line of defence, the remains of which are now locally known as Graham’s Dyke. Source: Hadrian’s Wall – English History