Steep black volcanic cliffs and raging rapids come together to form Hells Canyon National Recreation area on the Idaho/Oregon border. Although difficult for the casual traveler to visit, Hells Canyon is worth the effort.
Here the Snake River has carved the deepest river gorge in North America, about an 8000 foot vertical drop. For 700 million years this was the west coast of North America. Open ocean lay beyond. Then, 150 million years a
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