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- Northwest, Pacific 5
- Roads--Design and construction 5
- Scenic byways 5
- Photography 4
- Bridges 2
- Waterfalls 2
- Formations (Geology) 1
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Region
- Oregon >> United States 5
- Washington >> United States 5
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 2
- Columbia River >> Douglas County >> Washington >> United States 2
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- Oneonta Gorge >> Multnomah County >> Oregon >> United States 1
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