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Soggetto
- Trees6
- Yellowstone national park5
- Fences4
- Fountain paint pots (yellowstone national park)4
- Lower geyser basin (wyo.)4
- Mineral deposits4
- Minerals4
- Mud4
- National parks & reserves4
- Springs4
- Clouds2
- Shrubs2
- Hills1
- Index peak (wyo.)1
- Mountains1
- Norris geyser basin (wyo.)1
- Pilot peak (wyo.)1
- Red lodge (mont.)1
- Signs (notices)1
- Streams1