Topic summary
Stone circles

Extracted from the Wikipedia article Stone circle.
Stone circles are usually grouped in terms of the shape and size of the stones, the span of their radius, and their population within the local area. Although many theories have been advanced to explain their use, usually related to providing a setting for ceremony or ritual, no consensus exists among archaeologists regarding their intended function. Their construction often involved considerable communal effort, including specialist tasks such as planning, quarrying, transportation, laying the foundation trenches, and final construction.