Tourists on a boardwalk amidst the steam of the springs and geysers, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

ambiance ambient america american amidst and area areas atmosphere atmospheric attraction attractions basin being beings black boardwalk bodies body conservation day daylight daytime during energy exterior exteriors famous filled footbridge footbridges full geologic geological geologically geology geothermal geothermic geyser geyser geysers hot hot spring hot springs human humans known mood mood filled moods national national natural nature north of on outdoor park park parks people person persons photo photos power preserve preserves renowned reserve reserves sanctuaries sanctuary sand seeing several shot shots sight sights silhouette silhouettes site sites source sources spring springs states steam steaming the thermal tourism tourist touristic touristical touristically tourists tourists touristy united upper us us american usa vapor vapour water waters well well known wells wildlife worth wyoming yellowstone