From the Celtic word for a circular place, what term is used to identify groups of megaliths arranged in circular or semicircular patterns?

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The term cromlech comes from the Welsh language and is used to describe a group of megaliths arranged in circular or semicircular patterns. Dolmen refers to a type of single-chamber megalithic tomb, menhir refers to a single standing stone, and trilithon refers to a structure made of two upright stones with a horizontal stone laid across the top.

From the Celtic Word for a Circular Place, What Term