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

america american area areas bacteria bacteria bacterium basin black bodies body cliff coloured conservation countryside day daylight daytime drain draining during energy exterior exteriors famous fire geologic geological geologically geology geothermal geothermic germs geyser geyser geysers hole hot hot spring hot springs known landscape landscapes national national natural nature nobody north of outdoor outlet park park parks photo photos power preserve preserves renowned reserve reserves river sanctuaries sanctuary sand scenery scenic seeing shot shots sight sights source sources spring springs states steam steaming the thermal thermophilic united upper us us american usa vapor vapour water waters well well known wells wildlife worth wyoming yellowstone