Yes — evidence of a long‑extinct ancient volcano has been discovered beneath Lincolnshire, and it’s far more dramatic than anyone expected. The find is part of a 454‑million‑year‑old supervolcano buried under The Wash, extending into both Lincolnshire and Norfolk. crbcnews.com +2
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🧭 What was discovered?
Scientists analysing old borehole cores from Claxby (Lincolnshire) and North Creake (Norfolk) found zircon crystals whose ages match a massive volcanic ash layer spread across Scandinavia and the Baltic region. This linked the samples to a single colossal eruption during the Late Ordovician period, about 454.4 million years ago. Science Times
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🌋 How big was this volcano?
• Caldera size: At least 65 km (40 miles) across — comparable to the world’s largest known volcanic systems. crbcnews.com
• Eruption scale: Hundreds to possibly over a thousand cubic kilometres of material blasted into the atmosphere.
• Type: An ultraplinian eruption — towering ash columns and widespread pyroclastic flows. Science Times
• Reach: Ash from this eruption settled across Norway, Sweden, the Baltic region, Belarus, and Poland. iimop.com
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🧪 Why Lincolnshire matters
The Claxby borehole in Lincolnshire contained zircon crystals that precisely matched those from Norfolk and Scandinavia. This was the key evidence linking Lincolnshire to the buried volcanic system. AOL
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🛑 Is it dangerous today?
No. The volcano is completely extinct — it last erupted nearly half a billion years ago. There is no modern hazard associated with it. crbcnews.com
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🧠 Why this discovery is important
• It solves a decades‑long geological mystery about the source of the Kinnekulle ash layer in Scandinavia.
• It reshapes our understanding of Britain’s ancient geology, showing that eastern England once hosted volcanic activity on a scale rivaling the largest eruptions in Earth’s history.
• It highlights how flat, quiet landscapes like Lincolnshire can hide dramatic geological histories beneath their surface.
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If you want, I can go deeper into Lincolnshire’s volcanic evidence, how scientists dated the eruption, or what the landscape looked like at the time.