Turquoise clear water of a hot spring, Sapphire Pool, Black Sand Basin and Biscuit Basin, Yellowstone National Park, Wyoming, USA, North America

american america biscuit basin black sand basin clear deserted empty famous place geothermal areas geothermal area geothermal field geothermal power geothermal spring geothermal geothermic energy geothermic high temperature area hot spring hot mineral deposits mineral deposit minerals mineral np national parks national park usa national park natural preserve nature conservation area nature reserves nature reserve nobody no one no people north america np place of interest rocks rock sapphire pool sedimentation sediments sediment sights sight source springs spring steaming steam thermal area thermal springs thermal spring thermal zone tourist attractions tourist attraction travel photography turquoise blue turquoise green turquoise uninhabited united states of america united states us american us america usa waters water vapor water vapour water wyoming yellowstone national park