Stonehenge
Before the monument (from 8000 BC)

Archaeologists have found four, or possibly five, large Mesolithic postholes (one may have been a natural tree throw), which date to around 8000 BC, beneath the nearby old tourist car park in use until 2013. These held pine posts around two feet six inches (0.75 m) in diameter, which were erected and eventually rotted in situ. Three of the posts (and possibly four) were in an east–west alignment which may have had ritual significance. Another Mesolithic astronomical site in Britain is Warren Field in Aberdeenshire, which is considered the world's oldest lunisolar calendar, corrected yearly by observing the midwinter solstice. Similar but later sites have been found in Scandinavia. A settlement that may have been contemporaneous with the posts has been found at Blick Mead, a reliable year-round spring one mile (1.6 km) from Stonehenge.

Salisbury Plain was then still wooded, but, 4,000 years later, during the earlier Neolithic, people built a causewayed enclosure at Robin Hood's Ball, and long barrow tombs in the surrounding landscape. In approximately 3500 BC, a Stonehenge Cursus was built 2,300 feet (700 m) north of the site as the first farmers began to clear the trees and develop the area. Other previously overlooked stone or wooden structures and burial mounds may date as far back as 4000 BC. Charcoal from the 'Blick Mead' camp 1.5 miles (2.4 km) from Stonehenge (near the Vespasian's Camp site) has been dated to 4000 BC. The University of Buckingham 's Humanities Research Institute believes that the community who built Stonehenge lived here over a period of several millennia, making it potentially "one of the pivotal places in the history of the Stonehenge landscape."
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