"Riverside Geyser, Yellowstone National Park, Wyoming, United States, North America"

"Uncertain Geyser, Yellowstone National Park, Wyoming, United States, North America"

"Chromatic Pool, Yellowstone National Park, Wyoming, United States, North America"

"Grand Prismatic Spring, Yellowstone National Park, Wyoming, United States, North America"

"Grand Prismatic Spring, Yellowstone National Park, Wyoming, United States, North America"

"Morning Glory Pool, Yellowstone National Park, Wyoming, United States, North America"

"Lone Star Geyser, Yellowstone National Park, Wyoming, United States, North America"

"Lone Star Geyser, Yellowstone National Park, Wyoming, United States, North America"

"Lone Star Geyser, Yellowstone National Park, Wyoming, United States, North America"

"American Elk or Wapiti (Cervus canadensis), female crossing the road, Mammoth Hot Springs, Yellowstone National Park, Wyoming, United States, North America"

"Bison crossing the sinter crust of Grand Prismatic Spring, Yellowstone National Park, Wyoming, United States, North America"

"Old Faithful Inn, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States, North America"

"Limestone terraces of Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA, America"

"Limestone terraces of Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA, America"

"Living Color sinter terraces, coloured by thermophilic bacteria, Lower Terraces Area, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA"

"Living Color sinter terraces, coloured by thermophilic bacteria, Lower Terraces Area, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA"

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

"Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, United States, 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"

Minerva Terrace, Lower Terraces, Kalkstein-Sinterterrassen, heisse Quellen, Terrace Mountain, Mammoth Hot Springs, Yellowstone-Nationalpark, Wyoming, USA, Nordamerika

Liberty Cup, Palette Spring at back, Lower Terraces, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA, North America

"Hot spring, clear water, Perforated Pool, West Thumb, Yellowstone Lake in the background, Yellowstone National Park, Wyoming, Western United States, USA, United States of America, North America"

"Hot spring, blue water, water vapor, Sappire Pool with a sign, Biscuit 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"

"Sinter terraces of the Lower Terrace, Mammoth Hot Springs, Yellowstone National Park, Wyoming, United States, North America"