"Tourists at the Upper Geyser Basin, Yellowstone National Park, Wyoming, USA"

"Heart Spring, Upper Geyser Basin, Yellowstone National Park, Wyoming, USA"

"Heart Spring, Upper Geyser Basin, Yellowstone National Park, Wyoming, USA"

"West Thumb Geyser Basin, Yellowstone Lake, Yellowstone National Park, Wyoming, USA"

"Participants of the Old Faithful Yellowstone tour, at the entrance sign to Yellowstone National Park, Wyoming, USA"

"Tourists watching the eruption of Riverside Geyser, Yellowstone National Park, Wyoming, United States, North America"

"American bisons (Bison bison) crossing the road leading to Old Faithful, Yellowstone National Park, Wyoming, USA"

"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, 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"

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

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

"Tourists watching the eruption of the Old Faithful geyser, Yellowstone National Park, Wyoming, USA"