Stonehenge is a prehistoric monument on Salisbury Plain in Wiltshire, England, built in stages by Neolithic farming communities between roughly 3000 and 1500 BCE. Its giant sarsen stones were hauled about 25 km from West Woods near Marlborough, its smaller bluestones came some 225 km from the Preseli Hills of west Wales, and its main axis is aligned on the midsummer sunrise and the midwinter sunset. Most archaeologists now read it as a ceremonial monument connected with the dead, the ancestors and the turning of the solar year.
Stonehenge matters because it is one of the best-studied prehistoric sites on Earth, and recent research has overturned much of what was taught a generation ago. Geochemistry has pinned down where the stones came from, radiocarbon dating has rebuilt the construction sequence, and landscape excavation has revealed the people who gathered there. It is a rare monument where the evidence is rich enough to separate what is known from what is still genuinely open.
When was Stonehenge built
Stonehenge was built over about 1,500 years, from around 3000 BCE to around 1500 BCE, rather than in a single campaign. The standard sequence today is the staged chronology published in 2012 by Timothy Darvill, Peter Marshall, Mike Parker Pearson and Geoffrey Wainwright in the journal Antiquity.
- Stage 1, c. 3000 BCE. A circular ditch and bank were dug, with a ring of 56 pits just inside, known as the Aubrey Holes after the 17th-century antiquarian John Aubrey, who first recorded them. These pits probably held bluestones or timber posts. Cremated human remains were buried in and around them, representing about 150 individuals or more, which makes early Stonehenge the largest known Neolithic cemetery in Britain.
- Stage 2, c. 2500 BCE. The monument most people picture went up: a circle of 30 sarsen uprights capped by a continuous ring of lintels, enclosing a horseshoe of five much larger trilithons, each made of two uprights and a lintel. The bluestones were rearranged among the sarsens.
- Later stages, to c. 1500 BCE. The bluestones were reset several times and further rings of pits were dug around the circle before activity at the stones tailed off in the Bronze Age.
For scale, Stage 2 is roughly contemporary with the reign of Khufu in Egypt, whose monument is examined in the companion piece on [how the Great Pyramid of Giza was built](/how-was-the-great-pyramid-of-giza-built-evidence-theories-and-open-questions). Two very different societies, thousands of kilometres apart, were moving multi-tonne stones in the same few centuries.
Who built Stonehenge
Stonehenge was built by the Neolithic farming communities of Britain, not by Druids, Romans or visitors from elsewhere. Ancient DNA studies show that these people descended largely from farming populations whose ancestry traces back to Anatolia, in modern Turkey, and who reached Britain around 4000 BCE after spreading across Europe over the preceding millennia. They kept cattle and pigs, grew cereals, and had been building long barrows and timber monuments for centuries before Stonehenge.
The so-called Beaker people, named after their distinctive pottery, arrived in Britain around 2450 BCE, after the great sarsens were already standing. The newcomers inherited Stonehenge and kept using it, but they did not design it.
The builders were also far from the first people to raise megaliths. [Göbekli Tepe](/gobekli-tepe-explained-oldest-temple-in-the-world) in south-eastern Turkey, with its carved T-shaped pillars, is more than six thousand years older than the first ditch on Salisbury Plain.
Where the stones came from
Stonehenge uses stone from at least three widely separated regions: sarsens from Wiltshire, bluestones from west Wales, and a single large sandstone block from northern Scotland.
The sarsens
The sarsens are silcrete, an extremely hard stone that formed as a crust on the chalk downs. In 2020 a team led by geographer David Nash published geochemical analyses in Science Advances showing that 50 of the 52 surviving sarsens share a chemical signature with West Woods, near Marlborough, about 25 km to the north. The typical upright weighs around 25 tonnes, and the largest trilithon stones are estimated at more than 30 tonnes.
The bluestones
The bluestones are smaller, typically 2 to 5 tonnes, and are mostly spotted dolerite and rhyolite from the Preseli Hills in Pembrokeshire, about 225 km away. Excavations led by Mike Parker Pearson identified Neolithic quarry sites at Carn Goedog and Craig Rhos-y-felin, with stone wedges, working platforms and recesses where pillars had been prised from natural outcrops. In 2021 the same team proposed that some bluestones first stood in a circle at Waun Mawn in Preseli before being dismantled and taken to Salisbury Plain. That idea remains contested among archaeologists and geologists.
The Altar Stone
The Altar Stone, a roughly 6-tonne slab of sandstone lying near the centre of the monument, was long assumed to be Welsh as well. In 2024 a study in Nature led by Anthony Clarke matched its mineral grains to the Orcadian Basin of north-east Scotland, about 750 km away. That makes it one of the longest-distance megalith movements known from Neolithic Europe, and whether it travelled overland or by sea is an open question.
How the stones got there
The mainstream answer is human effort: teams hauled the stones on wooden sledges, probably running over timber rails or prepared tracks, using rope, levers and a great deal of organisation. Experiments have shown that bluestone-sized loads can be moved on sledges by modest teams; the sarsens were a problem of scale and coordination, not impossible physics. Uprights were most likely levered into pre-dug holes and pulled upright with ropes, and lintels raised on timber platforms or earth ramps. The lintels sit on the uprights with mortise-and-tenon joints and lock to one another with tongue-and-groove joints, techniques borrowed from woodworking.
A minority of geologists, notably Brian John, argue that Ice Age glaciers carried the bluestones most of the way east and that the builders simply collected them nearby. Most archaeologists and geologists reject this, pointing to the quarry evidence in Preseli and the lack of a convincing trail of Preseli boulders on Salisbury Plain. Parker Pearson has suggested the bluestones carried meaning from their place of origin, possibly an ancestral homeland.
What Stonehenge was for
Stonehenge was most likely a ceremonial and funerary monument that marked the solstices and honoured the dead; it was not a dwelling, a fort or a working observatory in any modern sense.
The solstice alignment
The main axis runs north-east to south-west. Standing at the centre and looking north-east, along the line of the Avenue and past the Heel Stone, an observer faces the midsummer sunrise; looking the opposite way, the midwinter sunset. Several archaeologists, Parker Pearson among them, argue that midwinter was the more important moment, because people approaching along the Avenue would have walked towards the setting midwinter sun framed by the largest trilithon. The Avenue runs from the monument down to the River Avon, and its first stretch follows natural ridges in the chalk that happen to line up with the solstice axis, which may help explain why this spot was chosen.
The solstice axis is secure; the 1960s claim by astronomer Gerald Hawkins that Stonehenge was an eclipse-predicting computer has not held up.
Durrington Walls and the ancestors
About 3 km north-east, Durrington Walls was a huge henge enclosing a settlement, occupied around 2500 BCE, the same period in which the sarsens were raised. Excavations recovered large quantities of pig and cattle bone from feasting, and the ages of the pigs show that many were slaughtered around midwinter. Strontium isotope analysis published in 2019 showed that animals were brought to the area from across Britain, which implies gatherings that drew people from far beyond Wiltshire.
In 1998 Parker Pearson and the Malagasy archaeologist Ramilisonina proposed what became known as the Stonehenge for the ancestors model. It reads the two sites as a pair: timber at Durrington Walls for the living, durable stone at Stonehenge for the dead, linked by the River Avon and the Avenue. Not every archaeologist accepts the full model, but the cremation cemetery at Stonehenge and the connected landscape fit it well. A competing proposal from Timothy Darvill and Geoffrey Wainwright casts it as a place of pilgrimage built around the bluestones; the monument's meaning likely shifted over 1,500 years.
Druids, Merlin and aliens: where the myths come from
The Druids did not build Stonehenge. They were Iron Age priests described by Roman writers such as Julius Caesar, active roughly two thousand years after the sarsens went up. The connection was made by John Aubrey in the 17th century and popularised by William Stukeley, whose 1740 book Stonehenge, a Temple Restor'd to the British Druids fixed the idea in the public mind.
The Merlin story comes from Geoffrey of Monmouth's History of the Kings of Britain, written around 1136, which says the wizard moved a ring of stones called the Giant's Dance from Ireland. Scholars treat it as legend.
The claim that Stonehenge needed help from beyond Earth has no physical support at the site: the quarries, antler picks, stone hammers, settlement and burials all point to a human project. The wider debate about ancient-astronaut readings of monuments is covered in the [Anunnaki and ancient-origins topic hub](/topics/anunnaki).
Stonehenge today
The monument visitors see today is partly restored: a leaning upright was straightened in 1901, and work between 1958 and 1964 re-erected fallen stones and set several in concrete. Stonehenge, with Avebury and associated sites, became a UNESCO World Heritage Site in 1986 and is managed by English Heritage. Thousands gather each year at the summer solstice. A long-running plan to put the nearby A303 road into a tunnel divided archaeologists and planners for decades and was cancelled by the UK government in 2024.
Billy Carson's reading
Billy Carson's work returns repeatedly to the idea that the great megalithic sites, from Giza to Göbekli Tepe to Salisbury Plain, reflect more knowledge of geometry, astronomy and the landscape than popular accounts give their builders credit for. His treatment of stone circles is best heard in his podcast conversation with the British author and dowser Maria Wheatley, Stone Circles and Mars: Decoding Ancient Architectural Blueprints. The episode is an interview, and the positions in it are Wheatley's and Carson's interpretations: that stone circles were laid out to deliberate geometric plans and sited with attention to what dowsers describe as earth energies, and, as the title signals, that similar patterns can be compared with features claimed on Mars.
A skeptical reader should keep two things separate. The geometry question is partly testable: Neolithic builders clearly used simple geometry, such as circles laid out from a centre point and an axis fixed on the sun, while claims of more complex encoded ratios depend heavily on which points are measured, a problem explored in the guide to [what in sacred geometry is actually mathematical](/sacred-geometry-explained-the-shapes-the-history-and-what-is-actually-mathematical). The earth-energy question is harder, because controlled tests of dowsing have not produced reliable results and no instrument has measured the lines dowsers report; the history of that idea, from Alfred Watkins onward, is set out in the article on [ley lines and earth energies](/ley-lines-explained-alfred-watkins-earth-energies-and-what-the-evidence-shows). Where Carson's reading and the archaeology meet is on one point both take seriously: the people who built Stonehenge were sophisticated, sky-aware and deeply invested in place.
Watch, read and go deeper
Billy's long-form conversations on ancient sites and lost knowledge are collected in the [4biddenknowledge Podcast on 4BK TV](/watch/billy-carson-4biddenknowledge-podcast). For stone circles specifically, start with the Maria Wheatley episode on stone circles and ancient blueprints. The [Anunnaki topic hub](/topics/anunnaki) gathers related articles on ancient origins and the monuments linked to them. For readers who want to stand at ancient sites in person, Billy's guided journeys are listed on the 4biddenknowledge tours page.
Frequently asked questions
How old is Stonehenge?
The earliest phase, a circular ditch and bank with the 56 Aubrey Holes, dates to around 3000 BCE, making the site about 5,000 years old. The famous sarsen circle and trilithons were raised around 2500 BCE, and the stones were rearranged until around 1500 BCE.
Where did the stones of Stonehenge come from?
The large sarsens came from West Woods near Marlborough, about 25 km north, according to 2020 geochemical analysis. The smaller bluestones came from quarries in the Preseli Hills of west Wales, about 225 km away. The Altar Stone was traced in 2024 to the Orcadian Basin of north-east Scotland, about 750 km away.
How were the Stonehenge stones moved?
The evidence points to people hauling the stones on wooden sledges, probably over timber rails or prepared tracks, using ropes and levers. A minority view holds that glaciers moved the bluestones, but most specialists reject it.
Did the Druids build Stonehenge?
No. The Druids were Iron Age priests who lived roughly two thousand years after the main stones were raised. The link was suggested by John Aubrey in the 17th century and popularised by William Stukeley in 1740.
Why is Stonehenge aligned with the solstices?
Its main axis points to the midsummer sunrise in one direction and the midwinter sunset in the other, which suggests the builders were marking the turning points of the year. Evidence of midwinter feasting at nearby Durrington Walls supports that reading.
Sources and further reading
- Mike Parker Pearson, Stonehenge: Exploring the Greatest Stone Age Mystery (2012).
- Timothy Darvill, Peter Marshall, Mike Parker Pearson and Geoffrey Wainwright, Stonehenge remodelled, Antiquity (2012).
- Rosamund Cleal, K. E. Walker and R. Montague, Stonehenge in its Landscape: Twentieth-Century Excavations (English Heritage, 1995).
- David Nash and colleagues, Origins of the sarsen megaliths at Stonehenge, Science Advances (2020).
- Mike Parker Pearson and colleagues, Megalith quarries for Stonehenge's bluestones, Antiquity (2019).
- Anthony Clarke and colleagues, A Scottish provenance for the Altar Stone of Stonehenge, Nature (2024).
- Mike Parker Pearson and Ramilisonina, Stonehenge for the ancestors: the stones pass on the message, Antiquity (1998).
