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

america american angle area areas attraction attractions bacteria bacteria bacterium basin being beings black boardwalk bodies body cast casting casts coloured conservation contorted countryside day daylight daytime deck decks distorted drainage during energy exterior exteriors famous geologic geological geologically geology geothermal geothermic germs geyser geyser geysers hot hot spring hot springs human humans known lake landscape landscapes microorganisms national national natural nature north observation of outdoor park park parks people person persons photo photograph photographing photographs photos picture platform platforms power preserve preserves renowned reserve reserves sanctuaries sanctuary sand scenery scenic seeing shadow shadows shot shots sight sights site sites snap snapping snaps source sources spring springs states steam steaming sunset take takes taking the thermal thermophilic tourism tourist touristic touristical touristically tourists touristy united upper us us american usa vapor vapour viewing warped water waters well well known wells wide wildlife with worth wyoming yellowstone