Erupting geyser and Old Faithful Inn, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Old Faithful geyser erupting, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Old Faithful geyser erupting, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Old Faithful Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Castle and Sawmill Geysers in eruption in Old Faithful Geyser Basin in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Crowds of spectators watching Old Faithful Geyser erupting, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison at Upper Geyser Basin in Old Faithful, Yellowstone National Park, Wyoming.

Bison at Upper Geyser Basin in Old Faithful, Yellowstone National Park, Wyoming.

Eruption of the Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Eruption of the Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Tourists in front of an Old Faithful geyser eruption, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Eruption of the Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Old Faithful feyser eruption, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Old Faithful feyser eruption, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Eruption of the Old Faithful geyser, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Old Faithful feyser eruption, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

Old Faithful feyser eruption, Upper Geyser Basin, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA