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Grand Canyon of the Yellowstone River in Yellowstone National Park.
| Yellowstone River runs through Grand Canyon it carved through Yellowstone National Park.
| Rock formations in Grand Canyon of the Yellowstone River in Yellowstone National Park.
| Looking down to Grand Canyon of the Yellowstone in Yellowstone National Park.
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Pine clings to cliff in Grand Canyon of the Yellowstone in Yellowstone National Park.
| Grand Canyon of the Yellowstone in Yellowstone National Park.
| Lower Falls on Yellowstone River in Grand Canyon of Yellowstone National Park.
| Yellowstone River flows over Lower Falls in Grand Canyon of Yellowstone National Park.
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Mist from Lower Falls of Yellowstone River turns walls of Grand Canyon green with plants in Yellowstone National Park.
| Rock formations in Grand Canyon of Yellowstone National Park.
| Observation stairway into Grand Canyon of Yellowstone National Park.
| Lichens on rocks of Grand Canyon of Yellowstone National Park.
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Yellowstone River near Tower Fall with two thick layers of volcanic deposits evident in Yellowstone National Park.
| Regular basalt layer in canyon wall provides evidence of the volcanic nature of Yellowstone National Park.
| Landscape near Tower Fall in Yellowstone National Park.
| Upper part of Tower Fall in Yellowstone National Park.
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Tower Fall in Yellowstone National Park.
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