Story perspectives
Hells Canyon's Youthful Age Revealed by Ancient Flood
6/21/2025
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Story summary
- New research reveals that Hells Canyon, North America's deepest river gorge, was shaped by a monumental flood around 2.1 million years ago. By examining cave sediments, scientists uncovered its surprisingly youthful age, deepening our understanding of canyon formation and its ecological significance in the western U.S.
