Hadrian'sWall

Ha·dri·an's Wall (hāʹdrē-ənz)

An ancient Roman wall, 118.3 km (73.5 mi) long, across northern England. Built by the emperor Hadrian c. A.D. 122-126 and extended by Severus a century later, the wall marked the northern defensive boundary of Roman Britain. Fragmentary ruins of the wall remain.

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