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Topic
- Cliffs 6
- Landscapes 4
- Nature 4
- Columbia River Gorge (Or. and Wash.) 3
- Rocks 3
- Trees 3
- Columbia River Highway (Or.) 2
- Columbia River Valley 2
- Columbia River 2
- Landforms 2
- Rivers 2
- Roads 2
- Waterfalls 2
- Automobiles 1
- Dwellings 1
- Electric lines--Poles and towers 1
- Gorges 1
- Railroad tracks 1
- Transportation 1
