Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

travel destination travel destinations travel photography colour image colour color image color vertical outdoors outside day no people nobody no one no one landscape landscapes scenics scenery scenic scene scenes nature the natural world physical geography topography topography geology non urban scene tree natural landmark landmarks geyser steam power hot spring power in nature the natural world heat clear sky blue limestone rock formation castle geyser upper geyser basin yellowstone national park unesco world heritage site unesco world heritage sites unesco world heritage site world heritage sites wyoming united states of america north america