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Counting rings reveals Sycamore Gap tree age range

Dendrochronological analysis confirms the Sycamore Gap tree was between 100 and 120 years old when illegally felled, with further studies planned to refine its age.

  • Using tree-ring counts, Historic England's Investigative Science team determined the Sycamore Gap tree beside Hadrian's Wall, Northumberland was at least 100 to 120 years old from a cross-section of the trunk.
  • On September 28, 2023, the Sycamore Gap tree was deliberately cut down and filmed, prompting global outrage; earlier this year Daniel Graham and Adam Carruthers were jailed over four years for the illegal act.
  • Researchers explained that each ring typically marks a year, with the tree formed from two main stems fused at about 30 or 35 years and the wood slice analyzed at Fort Cumberland Laboratories, Portsmouth.
  • The largest section is now on permanent display at The Sill: Landscape Discovery Centre, Northumberland National Park, while last month the sentences were referred to the Attorney General's Office but will not be reviewed.
  • Historic England said the analysis was the first scientific examination of the Sycamore Gap tree's age, with the wood slice preserved for future study by University of Exeter's Digital Humanities lab to achieve a `more accurate count`.
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The Independent broke the news in London, United Kingdom on Wednesday, September 3, 2025.
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