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Columbia River GorgeWikipedia

The Columbia River Gorge is a canyon of the Columbia River in the Pacific Northwest of theThe Columbia River Gorge marks the state line between Oregon and Washington. The wide range of elevation and precipitation makes the

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Hells CanyonWikipedia

Hells Canyon is amile (km) wide canyon located along the border of eastern Oregon,Early explorers sometimes called this area Box Canyon or Snake River Canyon. The early miners were next to follow.the corridor of the Snake River. Later efforts concentrated on hard-rock mining, requiring complex facilities.