Stonehenge

Timeline

1. c.3100 BC

   Phase 1 begins

   In the late Neolithic the outer bank-and-ditch enclosure is dug and 56 Aubrey Holes are arranged on a circle, marking the original Stonehenge.

2. c.2500 BC

   Bluestones brought

   About 80 igneous bluestones are quarried in the Preseli Hills of Wales 240 km away and somehow transported to Salisbury Plain.

3. c.2500-2200 BC

   Sarsens raised

   Thirty sarsen sandstone uprights weighing 25 tons each are hauled 30 km from Marlborough Downs and raised into the famous trilithon circle.

4. c.1600 BC

   Construction ends

   The early Bronze Age sees construction phases conclude; the site continues as a ceremonial precinct with extensive surrounding burials.

5. 1-5th c. AD

   Roman use

   Roman occupation leaves coins and offerings on site, suggesting partial reuse of the stones for ritual purposes during the Roman British era.

6. 1130

   Medieval mention

   Henry of Huntingdon's History of the English describes the stones in the 12th century, confirming that Stonehenge was already legendary in medieval times.

7. 1620

   Inigo Jones survey

   Architect Inigo Jones is commissioned by King James I to study the site and proposes a Roman-temple origin, opening the door to modern archaeology.

8. 1740

   Stukeley's plans

   Antiquarian William Stukeley publishes detailed surveys and proposes the influential Druidic-temple hypothesis that shapes British folklore for centuries.

9. 1918

   Gift to the nation

   Sir Cecil Chubb donates the privately owned Stonehenge and surrounding land to the British nation, today managed by English Heritage.

10. 1958-1964

    Major restoration

    Fallen sarsens are re-erected and stabilized on concrete foundations during major restoration campaigns that produce the present visitor view.

11. December 1986

    World Heritage Site

    UNESCO inscribes Stonehenge, Avebury and Associated Sites with Stonehenge and the larger Avebury complex 60 km north as combined components.

12. 2013

    New Visitor Centre

    A new visitor centre opens 1.5 km from the stones; the old A344 road is closed and the immediate landscape around the monument is largely restored.

13. 2020

    Sarsen source confirmed

    Chemical analysis confirms that the sarsen stones came from West Woods on Marlborough Downs 30 km north, opening a new chapter in research.

Detailed History

Stonehenge was built in stages from about 3100 BC to 1600 BC, a span of roughly 1,500 years. Phase 1 (c.3100 BC) opened with the construction of a circular bank-and-ditch enclosure 110 meters across, inside which 56 pits known as the Aubrey Holes (named after the 17th-century antiquarian John Aubrey, who first recorded them) were dug on a circle. Phase 2 (c.2500 BC) saw the erection of around 80 bluestones — igneous rock 2 meters tall and 4 tons each — whose source was identified by 2010s and 2020s excavations as the Carn Goedog and Craig Rhos-y-Felin quarries in the Preseli Hills (Pembrokeshire, Wales) 240 km away. The transport route by sea and river versus overland sled remains contested, and how prehistoric builders moved 80 stones over this distance is the great unsolved mystery of British prehistory. Phase 3 (c.2500-2200 BC) brought the iconic sarsen stones — sandstone 7 meters tall and 25 tons each, 30 in number — arranged in a circle topped with horizontal lintels. Sarsen sourcing was confirmed in 2020 by chemical analysis to West Woods on Marlborough Downs about 30 km north. The mortise-and-tenon and dovetail joinery, derived from contemporary woodworking, still holds the lintels in place 4,500 years on. The Roman period (1st-5th c. AD) saw partial reuse for ritual purposes, evidenced by Roman coins and offering deposits, after which the site fell into oblivion. Antiquarian John Aubrey (1626-1697) and William Stukeley (1687-1765) pioneered modern archaeological study; 19th and early 20th century stone falls were stabilized after 1918 when Sir Cecil Chubb donated the privately owned site to the British nation. Major restorations between 1958 and 1964 re-erected fallen sarsens with concrete foundations, producing the silhouette visitors see today. UNESCO inscribed the site as Stonehenge, Avebury and Associated Sites in December 1986, with both Stonehenge and the larger Avebury circle 60 km away as joint components. The new Visitor Centre opened 1.5 km from the stones in 2013, accompanied by the closure of the old A344 road and a major landscape rehabilitation.

Cultural Significance

Stonehenge is the icon of British prehistory and a research nexus for ancient astronomy, religion and social organization. UNESCO inscribed it under criteria (i)(ii)(iii): (i) for human creative genius in the precision joinery of giant stones, (ii) as an outstanding example of late Neolithic and Bronze Age architecture and (iii) as testimony to the prehistoric civilizations of Europe in the 3rd-2nd millennia BC. Multiple competing theories propose its function — a solar calendar (solstice alignment), a funerary precinct (extensive surrounding burials) and a healing sanctuary (folk belief in bluestone curative powers) — without settling on a single explanation. William Gowland's 1898 excavation marks the start of organized archaeological investigation. The summer solstice (21 June) is now a contemporary spectacle, drawing tens of thousands for Druidic rites that are reconstructions of the modern Druid revival movement, alongside the winter solstice (21 December) sunset gathering. Stonehenge anchors a wider sacred landscape on Salisbury Plain that includes Durrington Walls (the workers' village), the Stonehenge Cursus and Woodhenge, all of which contemporary research interprets as integrated parts of a single ceremonial complex spanning many generations. The site appears across British culture, from postage stamps to album covers and films, as the visual shorthand for prehistory.

Architectural Details

Stonehenge is built in four concentric layers from outside in. The outermost is a 110-meter-diameter bank-and-ditch enclosure (c.3100 BC) inside which 56 Aubrey Holes mark a perfect circle. The second layer is the great Sarsen Circle (33 meters across) of 30 sarsen sandstone uprights — about 4-5 meters above ground with 2 meters buried, weighing 25 tons each — capped with 30 horizontal lintels of about 7 tons. The third layer is the horseshoe of five sarsen trilithons surrounding a central altar, opening northeast toward the summer solstice sunrise. The fourth and innermost layer is a circle of about 80 igneous bluestones (43 surviving), 2 meters tall and 4 tons each. At the center lies the Altar Stone, a flat slab of green sandstone. Sarsen joinery uses mortise-and-tenon to lock uprights to lintels, and adjacent lintels are linked end-to-end with dovetail joints — techniques borrowed from prehistoric carpentry. The sarsens were originally polished smooth, a finish lost to 4,500 years of weathering. The Heel Stone (4.7 meters tall, 30 tons) stands 40 meters northeast of the circle, perfectly aligned so that the midsummer sunrise rises directly over it as seen from the center. A surrounding sacred landscape — the Avenue, the Cursus and the Station Stones — extends the prehistoric ceremonial geography across the surrounding plain.