«What is Offa's Dyke?»Arkivert 6. oktober 2015 hos Wayback Machine., CPAT. Sitat: «First of all there is the size of the earthwork and a sense of the enormity of building the massive bank and digging the ditch with only hand tools. Then there is an appreciation of the engineering and planning skill with which the Dyke fits into the landscape…»
«What is Offa's Dyke?»Arkivert 6. oktober 2015 hos Wayback Machine., CPAT. Sitat: «First of all there is the size of the earthwork and a sense of the enormity of building the massive bank and digging the ditch with only hand tools. Then there is an appreciation of the engineering and planning skill with which the Dyke fits into the landscape…»