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Stonehenge

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Stonehenge is a prehistoric megalithic structure located on Salisbury Plain in Wiltshire, England.

stonehenge 1877
stonehenge 1877

A megalith is a large stone used in prehistoric construction. This monument is a major British cultural icon and a UNESCO World Heritage Site.

It sits within a dense complex of Neolithic and Bronze Age monuments. These include several hundred tumuli, which are burial mounds. The site is legally protected as a scheduled monument. It is currently managed by English Heritage and owned by the Crown Estate.

The physical structure of Stonehenge is highly sophisticated.

Stonehenge diagram
Stonehenge diagram

An outer ring consists of large, vertical sarsen stones. Each of these stones is high, wide, and weighs approximately 25 tons. They are topped by horizontal lintel stones. These lintels are secured using mortise and tenon joints. A mortise and tenon is a method where a protrusion fits into a hole. This technique is unique among monuments from that time period. Inside this outer ring lies a smaller circle of bluestones. Some of these stones form trilithons. A trilithon consists of two large vertical sarsens supporting a single lintel.

Stonehenge stones plan by Nash et al 2021
Stonehenge stones plan by Nash et al 2021

The monument was not built all at once. Instead, it evolved through several construction phases over 1,500 years.

Stonehenge plan
Stonehenge plan

The earliest phase began around 3100 BC. This phase consisted of a circular earth bank and a ditch. The builders used Seaford chalk to create these earthworks. Within this area, they dug 56 pits known as Aubrey holes. These holes were named after the 17th-century antiquarian John Aubrey. Around 2900 to 2600 BC, a second phase occurred. During this time, timber structures may have been built inside the enclosure. The site also functioned as a cremation cemetery during this period.

Stone construction became the focus around 2600 BC.

Stonehenge phase one
Stonehenge phase one

During this stage, builders dug two concentric arrays of holes called the Q and R holes. These holes held up many standing stones. The famous large sarsen circle was placed between 2600 BC and 2400 BC. The bluestones were likely positioned between 2400 and 2200 BC. Some researchers suggest the bluestones might have been at the site as early as 3000 BC. This long timeline shows that the site was a pivotal place for many millennia. The construction required immense coordination and labor.

One of the most impressive aspects is the transport of the bluestones.

Stonehenge plan
Stonehenge plan

These stones are made of types like dolerite, which is an igneous rock. Evidence suggests they were moved from the Preseli Hills in Pembrokeshire, Wales. This is a very long distance from the site in England. A 2019 study found evidence of Megalithic quarrying in Wales. This indicates that humans, not glaciers, moved the stones. Some theories suggest the stones were part of a previous circle at Waun Mawn. That circle was dismantled before the stones were reused at Stonehenge. This shows a complex connection between different prehistoric sites.

Archaeologists have also discovered that Stonehenge served as a significant burial ground.

Stonehenge stones plan by Nash et al 2021
Stonehenge stones plan by Nash et al 2021

Excavations have uncovered human bone deposits dating back to 3000 BC. In 2013, a team led by Mike Parker Pearson found over 50,000 cremated bone fragments. These remains belonged to 63 different individuals. Analysis showed that these people included men, women, and children. Strontium content in the bones suggests many came from near the bluestone sources in Wales. This implies that the people who built the monument may have migrated to the area. The site was a place where many different people were honored.

The monument also has a deep connection to astronomy.

stonehenge sunrise sunset azimuth
stonehenge sunrise sunset azimuth

The entire structure is aligned with specific solar events. It is positioned toward the sunrise on the summer solstice. It is also aligned with the sunset on the winter solstice.

Summer Solstice Sunrise over Stonehenge 2005
Summer Solstice Sunrise over Stonehenge 2005

This alignment suggests that the builders possessed advanced knowledge of the sky. They used the stones to track the movement of the sun. This connects the physical monument to the larger cycles of the natural world. Stonehenge remains a testament to the intelligence and organization of prehistoric societies.

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🖼️ Images & Media (25)
File:Stonehenge Lucas de Heere.jpg
Stonehenge Lucas de Heere.jpg
File:Stonehenge plan.jpg
Stonehenge plan.jpg
File:Stonehenge phase one.jpg
Stonehenge phase one.jpg
File:Stonehenge dagger.jpg
Stonehenge dagger.jpg
File:Stonehenge diagram.svg
Stonehenge diagram.svg
File:Stone Plan.jpg
Stone Plan.jpg
File:stonehenge_sunrise_sunset_azimuth.svg
stonehenge_sunrise_sunset_azimuth.svg
File:Expansion of farming in western Eurasia, 9600–4000 BCE.png
Expansion of farming in western Eurasia,...
File:Stonehenge - Wiltonia sive Comitatus Wiltoniensis; Anglice Wilshire (Atlas van Loon).jpg
Stonehenge - Wiltonia sive Comitatus...
File:Stonehenge, from Gough’s edition of Britannia, 1789.jpg
Stonehenge, from Gough’s edition of...
File:Constable - Stonehenge, 1629-1888, 2006AK8142.jpg
Constable - Stonehenge, 1629-1888, 2006AK8142.jpg
File:stonehenge 1877.JPG
stonehenge 1877.JPG

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