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- Columbia River Highway (Or.) 84
- Roads 57
- Cliffs 32
- Rivers 29
- Trees 28
- Landscapes 23
- Columbia River 18
- Columbia River Gorge (Or. and Wash.) 16
- Rocks 16
- Bridges 15
- Automobiles 10
- Forests and forestry 6
- Roads--Guard fences 6
- Tunnels 6
- Railroad tracks 5
- Columbia River Gorge National Scenic Area (Or. and Wash.) 4
- Waterfalls 4
- Columbia River Valley 3
- Lower Columbia River Highway (Or.) 3
- Mountains 3
