
The 5,000-year-old wooden island hiding beneath a Hebridean loch
Underwater photogrammetry has revealed the Neolithic timber platform that propped up a Lewis crannog — and is rewriting what we know about Scotland's earliest builders
From the surface of Loch Bhorgastail, the small islet looks like nothing more than a tumble of stone in the water. But archaeologists have now confirmed that the entire structure rests on a vast wooden platform laid down more than 5,000 years ago — making it one of the most striking pieces of Neolithic engineering yet found in Scotland.
Researchers from the University of Southampton, working with colleagues at the University of Reading, have shown that the crannog on the Isle of Lewis began life as a circular timber platform around 23 metres (75ft) across, topped with layers of brushwood. Carbon dating places its construction between 3500 and 3300 BC, deep in the Neolithic period.
The findings, published in the journal Advances in Archaeological Practice, also unveil a new underwater imaging technique that the team believes will transform how shallow-water archaeology is recorded.
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