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Cord rig is the name given by archaeologists to a system of cultivation practiced in prehistoric and later upland Britain. Spades were used to excavate raised banks for cultivation with channels running alongside for drainage. Where it survives, it consists of parallel ridges of earth around 1 m wide and 0.15 m high. The ridges are separated by shallow furrows in fields of around 0.5 hectares, or about . The presence of cord rig suggests nearby settlements and can be identified from aerial photography.〔http://www.keystothepast.info/durhamcc/K2P.nsf/K2PGlossary?readform&GLOSSARY=cord+rig〕 In Northumberland, one example of cord rig has been identified running beneath, and therefore predating, Hadrian's Wall. ==See also== * Celtic fields * Lazy bed * run rig 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cord rig」の詳細全文を読む スポンサード リンク
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