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Topic
- Photography 3
- Scenic byways 3
- Tunnels 3
- Waterfalls 3
- Bridges 2
- Mountains 2
- Northwest, Pacific 2
- Rivers 2
- Formations (Geology) 1
- Highway engineering 1
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Region
- Oneonta Gorge >> Multnomah County >> Oregon >> United States 3
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 2
- Horsetail Falls >> Multnomah County >> Oregon >> United States 2
- Latourell Falls >> Multnomah County >> Oregon >> United States 2
- Multnomah Falls >> Multnomah County >> Oregon >> United States 2
- Oregon >> United States 2
- Columbia River >> Clatsop County >> Oregon >> United States 1
- Columbia River >> Douglas County >> Washington >> United States 1
- Eagle Creek >> Clackamas County >> Oregon >> United States 1
- Saint Peters Dome >> Multnomah County >> Oregon >> United States 1
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- application/xml 3