Hells Canyon National Recreation Area was created on
1975-12-31.
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The area of Hells Canyon National Recreation Area is 2,640.525
square kilometers.
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Hells Canyon is a ten mile wide canyon located along the border of eastern Oregon and western Idaho.
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The deepest gorge in Idaho is called Hells Canyon. The canyon is
part of Hells Canyon National Recreation Area, and is North
America's deepest river gorge.