The prehistoric stone circle on Salisbury Plain has long been an archaeological puzzle. For many years, historians and tourists alike believed that thousands of people cooperated to build this ancient monument. One long-running question concerns the monolithic rock at its centre, known as the Altar Stone. Weighing about six tonnes, this stone has been a key mystery. A geological study is prompting researchers to reconsider how it reached Stonehenge.
Unexpected Turn in Prehistoric Story
Such an unexpected turn in the story of the prehistoric age demonstrates that the path of this huge stone was much more complicated than previously thought. Despite findings proving that the stone came from the remote northeast of Scotland, the enormous distance of about seven hundred kilometres raised another big problem. Latest research suggests that this huge mass may have been moved with the help of glacial sheets instead of relying solely on human physical power. By analysing the planet's icy past, specialists gain a new perspective on how prehistoric people interacted with their environment. Researchers propose that prehistoric communities might have later moved the stone from submerged Doggerland to higher ground, highlighting its cultural significance.
Glacial Route for a Six-Tonne Megalith
To understand how the boulder ended up so far away, researchers examined events from deep prehistory. In an analysis presented in the Journal of Quaternary Science titled 'From Highlands to Henge: Refining the Provenance and Transport Pathways of Stonehenge's Altar Stone', scientists utilised state-of-the-art mineral tracking methods along with computer simulations of glaciers. The study determined that during the ice age on the British Isles, massive glaciers originating from the Orcadian Basin in Scotland would have carried the Altar Stone southwards.
The study identifies Dogger Bank as one possible point along the glacier's route. Currently, Dogger Bank lies submerged under the North Sea, but it was once part of the wider landscape known as Doggerland, which connected Britain to mainland Europe. Because the area lacks natural sandstone sources, a large rock would likely have stood out. This study suggests that glaciers may have reduced the amount of human effort needed to move the stone.
A Shared Cultural Rescue Mission from Rising Tides
This proposed glacial path does not rule out human effort in the monument's history. As detailed in an analysis by BBC Science Focus Magazine, the revised timeline implies that the Altar Stone held immense cultural value long before it arrived on Salisbury Plain. When the last ice age ended, rapidly rising sea levels began to slowly drown the low-lying plains of Doggerland. Prehistoric communities may have recognised the threat to this significant landmark and moved the stone to higher ground before rising waters consumed their homeland.
The transport of the stone over hundreds of kilometres on land and by water raises questions about the societies involved. It would require knowledge of regional geography, skills in navigating the seas, and a cultural idealism that brought these people together to accomplish such a task. Researchers say the finding adds a new dimension to the story of how the stone may have reached Stonehenge.
