796-2296 - Riverside Geyser, Upper Geyser Basin Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
796-2295 - Morning Glory Pool in Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
762-763 - Old Faithful Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
832-369846 - Tourist on a boardwalk amidst the steam of the springs and geysers, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
1167-336 - Grand Geyser erupts, forcing steam high into the air, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-337 - Grand Geyser erupts, forcing steam high into the air, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-334 - Elevated view of Doublet Pool, Firehole River and Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-339 - Eruption of Riverside Geyser, Firehole River, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-340 - Eruption of Riverside Geyser seen from Firehole River bridge, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-338 - Eruption of Riverside Geyser, Firehole River, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-335 - Daisy Geyser, one of the most predictable, erupts at an angle, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-319 - Colourful thermal features, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-321 - Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-320 - Erupting geyser and Old Faithful Inn, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-323 - Lone observer watches Grand Geyser erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-316 - Crested Pool; hot spring; Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-317 - Chromatic Pool and surrounds on a clear day, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-322 - Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-318 - Rocket and Grotto cone geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-303 - Castle Geyser and steamy surrounds, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-305 - Grand Geyser erupts and steam blocks the sun, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-304 - Grand Geyser run-off, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-306 - Trees crusted in frost and thermal features, cold Autumn (Fall) day, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-307 - Trees crusted in frost and thermal features, cold Autumn (Fall) day, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-118 - Rainbow cast by eruption of Riverside Geyser, Firehole River, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-102 - Castle Geyser at sunset, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-111 - Sawmill Geyser erupts, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-101 - Cold tourists on seat surrounded by steam, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-77 - Grand Geyser erupts and steam blocks the sun, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-75 - Castle Geyser steam blocks sun, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
1167-76 - Sawmill Geyser erupts, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
832-123920 - Opalescent Pool, geyser, drainage area with coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-123931 - Tourists on a boardwalk amidst the steam of the springs and geysers, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-124057 - Eruption of the Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-124061 - View over Firehole River, Geyser Hill, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-123921 - Coloured thermophilic bacteria, the outlet of Cliff Geyser, Fire Hole River, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-123918 - Punch Bowl Spring, geyser, drainage area, coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-124046 - Tourists watching the eruption of the Daisy Geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-123932 - Tourists on a boardwalk amidst the steam of the springs and geysers, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-124060 - Eruption of the Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-124063 - Chromatic Pool Geyser, stormy atmosphere, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-124024 - Tourists in front of an Old Faithful geyser eruption, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-123934 - Tourists taking photos while on a boardwalk amidst the steam of the springs and geysers, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-124049 - Chromatic Pool Geyser, stormy atmosphere, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-123919 - Punch Bowl Spring, geyser, drainage area, coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-124045 - Morning Glory Pool geyser and boardwalk, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-124059 - Eruption of the Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-123929 - Sunset Lake, geyser, drainage area with a boardwalk, coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-124056 - Eruption of the Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA
832-124058 - Emerald Pool Geyser, drainage area, colored thermophilic bacteria, microorganisms, geothermal sources, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-123930 - Sunset Lake, geyser, drainage area, coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
832-123928 - Emerald Pool, geyser, drainage area with a boardwalk, coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA