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Scientists delve into Hells Canyon cave to solve mystery of America's deepest gorge
About 2,000 feet deeper than the Grand Canyon, Hells Canyon was rapidly carved when a lake spilled over about 2.1 million ...
NPR1mon
Hells Canyon is deeper and younger than the Grand Canyon - NPR
Hells Canyon, the deepest river gorge in the United States, was carved just about 2.1 million years ago — making it much younger than the Grand Canyon. Matthew Morriss hide caption ...
KUOW1mon
KUOW - Hells Canyon, the deepest gorge in the U.S., is surprisingly young - KUOW Public Radio
Hells Canyon, the deepest river gorge in the United States, likely got rapidly carved 2.1 million years ago when a shifting landscape in Idaho caused a giant lake to start overflowing.
WUFT1mon
Hells Canyon, the deepest gorge in the U.S., is surprisingly young
Hells Canyon, the deepest river gorge in the United States, likely got rapidly carved 2.1 million years ago when a shifting landscape in Idaho caused a giant lake to start overflowing.
KBIA1mon
Hells Canyon, the deepest gorge in the U.S., is surprisingly young
Hells Canyon, the deepest river gorge in the United States, likely got rapidly carved 2.1 million years ago when a shifting landscape in Idaho caused a giant lake to start overflowing. That's ...
KCRW1mon
Hells Canyon, the deepest gorge in the U.S., is surprisingly young | NPR - KCRW
Hells Canyon, the deepest river gorge in the United States, likely got rapidly carved 2.1 million years ago when a shifting landscape in Idaho caused a giant lake to start overflowing. That's ...