How and when North Americas deepest river gorge formed

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2025-05-22 13:15:34 -

WWW.NATURE.COM

Nature, Published online: 22 May 2025; doi:10.1038/d41586-025-01613-yAn analysis of landscape features and of river deposits preserved in caves point to an event 2.1 million years ago that triggered the formation of Hells Canyon.

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