Windmill Hill, Avebury aerial photograph
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aerial photograph of Windmill Hill, Avebury Wiltshire England. Windmill Hill near Avebury is Britain's largest Neolithic causewayed enclosure. The oldest evidence to date the site shows activity around 3800 BC with the ditches around the hilltop being dug around 3300 BC.The site continued into use into the Bronze age when at least one of the burial barrows was built.