Dead trees at Opalescent Pool with mineral deposits, Black Sand Basin, Yellowstone National Park, Wyoming, USA, North America

american america black sand basin dead 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 opalescent pool opal pool place of interest rocks rock sedimentation sediments sediment sights sight source springs spring thermal area thermal springs thermal spring thermal zone tourist attractions tourist attraction travel photography trees tree uninhabited united states of america united states us american us america usa waters water wyoming yellowstone national park