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- Columbia River Valley 28
- Columbia River 24
- Rivers 18
- Trees 15
- Nature 11
- Landscapes 8
- Rocks 7
- Mountains 6
- Landforms 5
- Riparian areas 4
- Bridge of the Gods (Or. and Wash. : Natural bridge) 3
- Cliffs 3
- Columbia River Highway (Or.) 3
- Cascades (Or. and Wash.) 2
- Multnomah Falls (Or.) 2
- Persons 2
- Railroad tracks 2
- Rapids 2
- Waterfalls 2
- Automobiles 1