Tourists on the boardwalk along the Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, Idaho, Montana, America, United States

along america american area areas attraction attractions basin boardwalk day daylight daytime during energy exterior exteriors famous geothermal geothermic geyser geyser geysers grand hot hot spring hot springs idaho known midway montana national north of on outdoor park photo photos power prismatic renowned seeing shot shots sight sights site sites source sources spring spring springs states the thermal tourist tourists united us us american usa well well known wells worth wyoming yellowstone