| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Offa’s Dyke |
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| ancient entrenchment of W England and E Wales, from the Dee estuary to near the estuary of the Wye River. It was built in the 8th cent. by Offa, king of Mercia, as a barrier against the Welsh and lies mainly along the England-Wales boundary. Watt’s Dyke, a similar work, roughly parallels a section of Offa’s at a distance of c.2 mi (3.2 km). Parts of the dikes are well preserved. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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