Opalescent Pool, geyser, drainage area with coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

ambiance ambient america american area areas atmosphere atmospheric bacteria bacteria bacterium basin black bodies body coloured conservation countryside creepily creepy day daylight daytime dead deadwood drainage during eerie eerily energy exterior exteriors famous filled full geologic geological geologically geology geothermal geothermic germs geyser geyser geysers ghostly hot hot spring hot springs known landscape landscapes microorganisms mood mood filled moods national national natural nature nobody north of opalescent outdoor park park parks photo photos pool power preserve preserves renowned reserve reserves sanctuaries sanctuary sand scenery scenic seeing shot shots sight sights source sources spectral spectrally spookily spooky spring springs states the thermal thermophilic tree trunk trunks uncannily uncanny united upper us us american usa water waters well well known wells wildlife with wood worth wyoming yellowstone