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Title
Hell`s Canyon Oregon and Idaho volcanic rock limestone and scrub bushes geologic feature horizontal #194760911
Description
Hell`s Canyon, a 10-mile-wide 16 km canyon runs between Oregon and Washington on the east and Idaho on the west in the United States. Part of the Hells Canyon National Recreation Area, Wallowa-Whitman National Forest. North America`s 2nd deepest river gorge at 7,993 feet 2,436 m. Hell`s Canyon runs deeper than the the Grand Canyon. The Snake River flows more than one mile 1.6km below the canyon`s west rim on the Oregon side and 7,400 feet 2,300 m below the peaks of Idaho`s Seven Devils Mountains range to the east. Geologic history began 300 million years ago with an arc of volcanoes. Over millions of years, the volcanoes subsided and limestone built up on the underwater platforms. The basins between them were filled with sedimentary rock. High Desert climate, pacific northwest.