Definition of ring fort in English:

ring fort

noun

Archaeology

单词	ring fort
释义	Definition of ring fort in English: ring fort noun Archaeology A prehistoric earthwork, especially an Iron Age hill fort, defended by circular ramparts and ditches. 〔考古〕环形护城工事（一种史前时期工事，尤指铁器时代的山堡，有环状堤墙和环沟护卫） Example sentencesExamples There is also a thatched roundhouse, ring fort and stone chamber. The Celts also introduced the ring fort, which remained the basis of the social structure of pre-Christian Ireland. And the area was steeped in history with a massive ring fort nearby. Scattered remnants and fragments of our ancient history are to be found abundantly in the North West in the form of cairns, dolmens and ring forts. The society celebrated Heritage week by engaging in a guided walk to the ring fort at Knocklong on September 7.
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