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

above america american angle area areas bacteria bacteria bacteriology bacterium basin biology black boardwalk boardwalks bodies body colored colorful coloured colourful conservation contorted countryside day daylight daytime discolored discoloured distorted dock docks during elevated emerald energy exterior exteriors footbridge footbridges from geologic geological geologically geology geothermal geothermic germs geyser geyser geysers heat high high angle hot hot spring hot springs landscape landscapes microbiology microorganisms mountain mountains national national natural nature nobody north of orange outdoor outlet park park parks perspective perspectives photo photos pier piers pool power preserve preserves reserve reserves sanctuaries sanctuary sand scenery scenic seeing shot shots sight sights source sources spring springs states the thermal thermophilic top topview topviews tourism touristic touristical touristically touristy united upper us us american usa view views warm warmness warmth warped water waters well wells wide wildlife wood wooden worth wyoming yellow yellowstone