#Scientists think they know why Stonehenge was rebuilt thousands of years ago, Scientists made a major discovery this year linked to Stonehenge — one of humanity’s biggest mysteries — and the revelations keep coming.
A team of researchers shared evidence in August suggesting that the Altar Stone, an iconic monolith at the heart of Stonehenge, was transported hundreds of miles to the site in southern #England nearly 5,000 years ago from what’s now northeastern Scotland. Just a month later, a report led by the same experts ruled out the possibility that the stone came from Orkney, an archipelago off Scotland’s northeastern coast that’s home to Neolithic sites from that time frame, and the search for the monolith’s point of origin continues.
A #mysterious monument
Construction on Stonehenge began as early as 3000 BC and occurred over several phases in an area first inhabited as early as 5,000 to 6,000 years ago, according to the researchers.
Previous analysis has shown that bluestones, a type of fine-grained sandstone, and larger silicified sandstone blocks called sarsens were used in the monument’s construction. The bluestones were brought from 140 miles (225 kilometres) away at the Preseli Hills area in west Wales and are thought to have been the first stones placed at the site. The sarsens, used later, came from the West Woods near Marlborough, located about 15 miles (25 kilometres) away.
Researchers believe the Altar Stone was placed within the central horseshoe during a rebuilding phase. While the exact date is unknown, the study authors believe the stone arrived between 2500 and 2020 BC.
It’s during that rebuilding phase, according to the research, that Stonehenge’s builders erected the large sarsen stones to form an outer circle and an inner horseshoe made of trilithons, or paired upright stones connected by horizontal stone beams, which remain part of the monument to this day.
The Altar Stone is the largest of the bluestones used to build Stonehenge. Today, the Altar Stone lies recumbent at the foot of the largest trilithon and is barely visible peeking through the grass.
Many questions remain about the exact purpose for Stonehenge and the Altar Stone. But the monument aligns with the sun during the winter and summer solstices.
“There’s good evidence to suggest that these large stone monoliths have ancestral significance, representing and even embodying the ancestors of the people who placed them,” Parker Pearson said. “(The Altar Stone’s) location within Stonehenge is important as if you stand at the center of the stone circle, the midwinter solstice sun sets over its middle.”
During the winter, Neolithic people would gather near Stonehenge at the village of Durrington Walls, bringing pigs and cattle with them for a feast, Parker Pearson said. Stonehenge was also the largest burial ground of its time, lending support to the idea that the site may have been used as a religious temple, a solar calendar and an ancient observatory all in one.
And nearly half the Neolithic people buried near Stonehenge came from somewhere other than Salisbury Plain.
The new research adds a political twist to the backstory of a rebuilt Stonehenge.
“The fact that all of its stones originated from distant regions, making it unique among over 900 stone circles in Britain, suggests that the stone circle may have had a political as well as a religious purpose — as a monument of unification for the peoples of Britain, celebrating their eternal links with their ancestors and the cosmos,” Parker Pearson said.
Bridging distant communities
This show of unity — transporting giant stones long distances — would not have been easy for Neolithic people. The study authors don’t think boats at the time would have been strong enough to carry anything like the Altar Stone across coastal waters.
“Though the wheel had been invented elsewhere, it hadn’t quite reached Britain yet, so the massive stone blocks would likely have had to be dragged by wooden sledge sliding atop wooden rails that could be continuously lifted and re-laid,” Parker Pearson said.
The wooden sledge could have had shock absorbers made from vegetation to cushion the stone, which would have been susceptible to cracking on the long journey, the study authors said.
Hundreds, and possibly thousands, of people would have been needed to help move the stone over land, and the journey may have taken about eight months, the researchers noted in the paper.
“Travel by land would have provided much better opportunities for spectacle, pageantry, feasting and celebration that would have drawn people in (the) thousands to witness and take part in this extraordinary venture,” according to the study.
Moving the massive stone from Scotland to southern England suggests there was a network between two distant groups fostered by collaboration and cooperation — something the researchers think existed due to striking cultural similarities in both locations.
“They would have taken significant coordination across Britain — people were literally pulling together — in a time before telephones and email to organize such an effort,” Parker Pearson said.
The Altar Stone is similar in both size and placement to other large horizontal blocks in stone circles found in northeast Scotland, the study authors said. These recumbent stone circles have only been found in that part of Scotland, rather than the rest of England, which suggests that the Altar Stone may have been a gift from the community in northern Scotland to signify a type of alliance.