Archaeologists believe it was constructed from 3000 BC to 2000 BC.
Stonehenge is a prehistoric monument in Wiltshire, England, 2 miles (3 km) west of Amesbury and 8 miles (13 km) north of Salisbury.
Stonehenge's ring of standing stones are set within earthworks in the middle of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds.
As often happens in archaeological terminology, this is a holdover from antiquarian use, and Stonehenge is not truly a henge site as its bank is inside its ditch. Stones visible today are shown coloured Mike Parker Pearson, leader of the Stonehenge Riverside Project based at Durrington Walls, noted that Stonehenge appears to have been associated with burial from the earliest period of its existence: Stonehenge was a place of burial from its beginning to its zenith in the mid third millennium B. The cremation burial dating to Stonehenge's sarsen stones phase is likely just one of many from this later period of the monument's use and demonstrates that it was still very much a domain of the dead.
Despite being contemporary with true Neolithic henges and stone circles, Stonehenge is in many ways atypical—for example, at more than 7.3 metres (24 ft) tall, its extant trilithons supporting lintels held in place with mortise and tenon joints, make it unique. Stonehenge evolved in several construction phases spanning at least 1500 years.
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 modern tourist car-park.
These held pine posts around 0.75 metres (2 ft 6 in) in diameter, which were erected and eventually rotted in situ.
Like Stonehenge's trilithons, medieval gallows consisted of two uprights with a lintel joining them, rather than the inverted L-shape more familiar today.
The "henge" portion has given its name to a class of monuments known as henges. Italicised numbers in the text refer to the labels on this plan. Holes that no longer, or never, contained stones are shown as open circles.
In approximately 3500 BC, a Stonehenge Cursus was built 700 metres (2,300 ft) north of the site as the first farmers began to clear the trees and develop the area.
A number of other adjacent stone and wooden structures and burial mounds, previously overlooked, may date as far back as 4000 BC.
This first stage is dated to around 3100 BC, after which the ditch began to silt up naturally.