In south-west England, there runs a great earthwork from the mouth of River Dee near Chester, to the estuary of River Severn near Chepstow, traversing through more than 150 miles, although the earthwork is not continuous. This is Offa’s Dyke, and for centuries it has marked the boundary between England and Wales.
Offa was the king of the Anglo-Saxon kingdom of Mercia during the second half of the 8th century. He controlled large swathes of land in the lowlands of Britain to the east and south-east of what was to become England, but the land to the west was divided into a number of kingdoms free from Anglo-Saxon rule. These kingdoms, ruled by the Romano-Britons—a culture that evolved after the fall of the Roman Empire—eventually become … Read the rest