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Hut on Iona dates to St Columba’s lifetime in sixth century, archaeologists say

Carbon dating test results show the hut dated back to between 540 and 650.

Archaeologists have uncovered conclusive evidence that a wooden hut traditionally associated with St Columba at his ancient monastery on the island of Iona dates to his lifetime in the late sixth century.

Carbon dating has led to the breakthrough, which proves samples of hazel charcoal, unearthed in an excavation of a wattle and timber structure on Iona 60 years ago, are from the exact period Columba lived in the Inner Hebridean monastery.

The structure is believed to be the monk’s “cell” where he prayed and studied in isolation.

The samples were excavated in 1957 by archaeologist Professor Charles Thomas but with radio carbon dating only just emerging at the time, they were not tested and instead kept in matchboxes in his garage in Cornwall.

Although the excavators of the hut argued it was likely Columba’s cell, the lack of dating technology led many archaeologists to dismiss the findings as speculation and scientifically unproven.

In 2012, part of Prof Thomas’ archive was passed to Historic Environment Scotland. It was shared with the University of Glasgow, which recently identified the significance of the samples and submitted them for carbon dating.

Results show the hut dated back to between 540 and 650. Columba died in 597.

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Iona Abbey and St Martin's Cross (Glasgow Iona Research Group/PA)

Altogether, ten radiocarbon dates were returned from samples from Prof Thomas’ excavations, all dating to the early medieval period (AD 500-1100).

Prof Thomas died last year but Dr Adrian Maldonado, from the University of Glasgow, described the dating as vindication of his foresight in storing the samples.

“Thomas always believed he and his team had uncovered Columba’s original wooden hut but they could never prove it because the technology wasn’t there,” he said.

“So, for us, 60 years later, to be able to send the original samples off to the radiocarbon dating labs and have them come back showing, within the margin of error, as something which may have been built in the lifetime of St Columba, is very exciting.

“This is as close as any archaeologist has come to excavating a structure built during the time of St Columba and it is a great vindication of the archaeological instincts of Thomas and his team.”

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St Columba in his cell (Glasgow Iona Research Group)

St Columba is widely revered as a key figure in western Christianity and took the religion to Scotland from Ireland, landing on Iona in the year 563.

In the Life of St Columba, written 100 years after his death by his successor Adomnan, Columba was described as often writing in his cell on a rocky hillock, called Torr an Aba or “the mound of the abbot”.

When Prof Thomas excavated the site 60 years ago, the carbonised remains of wattle walls of a small hut were unearthed below layers of loose pebbles, suggesting the wooden structure had burned down and the area filled over. The site was later marked with a cross.

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St Columba's Cell charcoal in the original box (Glasgow Iona Research Group/PA)

Professor Thomas Clancy, Celtic and Gaelic historian at the University of Glasgow, said: “The remains on top of Torr an Aba had been dismissed as from a much later date.

“Now we know they belonged to a structure which stood there in Columba’s lifetime.

“More than that, the dates, and our new understanding of the turning of the site into a monument not long after its use, makes it pretty clear that this was St Columba’s day or writing house.”

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