How and when North America’s deepest river gorge formed

Nature·May 22

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A new study has shed light on the formation of North America's deepest river gorge, Hells Canyon. The gorge's origins had puzzled geologists for 150 years, with one of its unusual features being a river that appears to flow "uphill". The study suggests that the gorge is surprisingly young and may be connected to the disappearance of a large inland sea that once existed in the region.

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Hells Canyon, The Deepest River Gorge In The US, Was Created Incredibly Recently

IFLScience·May 30

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How and when North America’s deepest river gorge formed

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Hells Canyon, The Deepest River Gorge In The US, Was Created Incredibly Recently