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
832-123928 - 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
832-123926 - 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
832-123927 - 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
832-110161 - Emerald Pool, geyser, outlet area, colourful thermophilic bacteria, microorganisms, boardwalk, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA