Castle Geyser, Upper Geyser Basin, Yellowstone National Park, Wyoming, USA

america american area areas attraction attractions basin castle conservation day daylight daytime during energy exterior exteriors famous geothermal geothermic geyser geyser geysers hot hot spring hot springs known national national natural nature nobody north of outdoor park park parks photo photos power preserve preserves renowned reserve reserves sanctuaries sanctuary seeing shot shots sight sights site sites source sources spring springs states the thermal tourist united upper us us american usa well well known wells wildlife worth wyoming yellowstone