The origin story of Hells Canyon, North America's deepest river gorge, has long been unclear to scientists. But new research estimates it formed about 2.1 million years ago when a dramatic flood event ...
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Grand Canyon’s “Forbidden Zone”: For 100 Years, the Smithsonian Denied It - Now a Ranger Says He Found Proof
Every good American mystery has a dateline. This one starts in April 1909. According to a century-old story in the Arizona Gazette, an explorer named G.E. Kincaid supposedly found a high-wall cave in ...
Mysterious driftwood high in Grand Canyon caves hints at the legacy of Arizona’s huge impact crater.
Hells Canyon, the deepest river gorge in the country, has always been a marvel for geologists, archeologists and travelers. But researchers are just now learning about the origins of the canyon — and ...
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