Rapid passing through forest, Firehole River, Yellowstone National Park, Wyoming, USA

Aerial view of river, Yellowstone River, Yellowstone National Park, Wyoming, USA

High angle view of canyon, Grand Canyon, Yellowstone River, Yellowstone National Park, Wyoming, USA

Yosemite Falls, Yosemite National Park, California, USA

High angle view of waterfall, Yellowstone National Park, Wyoming, USA

Steam emerging from hot river in winter, Yellowstone National Park, Wyoming, USA

Fallen bare tree in field, Yellowstone National Park, Wyoming, USA

Brown bear (Ursus Arctos) preying sockeye salmon in river, Brooks Falls, Brooks River, Katmai National Park, Alaska, USA

Lower Falls in the Grand Canyon of the Yellowstone view from Artist Point, USA

Waterfall, Tower River Falls, Yellowstone National Park, Wyoming, USA