Vixen Geyser, prohibition sign, Back Basin, Norris Geyser Basin, geysers, geothermal springs in Yellowstone National Park, Wyoming, United States of America, USA

allowed america american area areas attraction attractions back ban bans basin conservation day daylight daytime during energy exterior exteriors famous forbidden geothermal geothermic geyser geyser geysers hot hot spring hot springs in known national national natural nature nobody norris north not of outdoor park park parks photo photos power preserve preserves prohibited prohibition prohibitions renowned reserve reserves sanctuaries sanctuary seeing shot shots sight sights sign signboard signboards signs site sites source sources spring springs states the thermal tourist united us us american usa vixen well well known wells wildlife worth wyoming yellowstone