"Grizzly (Ursus arctos horribilis), female with two cubs, Yellowstone National Park, Wyoming, United States, North America"

"Grizzly (Ursus arctos horribilis), female with two cubs, Yellowstone National Park, Wyoming, United States, North America"

"Grizzly (Ursus arctos horribilis), female with two cubs, Yellowstone National Park, Wyoming, United States, North America"

"Geyser, hot spring, steam, Clepsydra Geyser, Lower Geyser Basin, Yellowstone National Park, Wyoming, USA, United States of America, North America"

"Hot spring, limestone sinter, Doublet Pool, Geyser Hill, Upper Geyser Basin, Yellowstone National Park, Wyoming, Western United States, USA, United States of America, North America"

"Hot spring, water fountain, eruption, geyser, Sawmill Geyser, Castle-Grand Area, Upper Geyser Basin, Yellowstone National Park, Wyoming, Western United States, USA, United States of America, North America"

"Hot spring, boiling water, steam, Crested Pool, Castle-Grand Area, Upper Geyser Basin, Yellowstone National Park, Wyoming, Western United States, USA, United States of America, North America"

"Hot spring, dwindling eruption, geyser, steam against a blue sky, Old Faithful, Upper Geyser Basin, Yellowstone National Park, Wyoming, Western United States, USA, United States of America, North America"

"Hot spring with a cone geyser, steam column, water vapor, Castle Geyser, Castle-Grand Area, Upper Geyser Basin, Yellowstone National Park, Wyoming, Western United States, USA, United States of America, North America"

"Porcelain Springs, Norris Geyser Basin, Yellowstone National Park, Wyoming, USA"

Lobby of Old Faithful Inn Hotel, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States, North America

"Black Growler Steam Vent, Porcelain Basin, Norris Geyser Basin, Yellowstone National Park, Wyoming, USA"

"Bubbling hot springs, Porcelain Basin, Norris Geyser Basin, Yellowstone National Park, Wyoming, USA"

"Thermal area, West Thumb Geysir Basin, Yellowstone National Park, Wyoming, USA"

"Sinter terraces, Mound Terrace, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA"

"Bear track, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States, North America"