Stonehenge is a Neolithic / Bronze Age monument located on Salisbury Plain, Wiltshire, southern England. The first monument on the site, began around 3100 BCE, was a circular 'henge' earthwork about 360 feet (110 metres) in diameter, a 'henge' in the archaeological sense being a circular or oval-shaped flat area enclosed by a boundary earthwork.
This is a companion discussion topic for the original content at https://www.worldhistory.org/stonehenge/.