Tourists looking at Seismograph and Bluebell pools, West Thumb 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 horizontal tourists seismograph pool bluebell pool west thumb geyser basin yellowstone national park unesco world heritage site unesco world heritage sites unesco world heritage site world heritage sites wyoming usa us united states usa us united states united states of america north america american north american outdoors outside day landscape landscapes scenics scenery scenic scene scenes nature the natural world beauty in nature natural beauty physical geography topography topography geology national park international landmark landmarks non urban scene tree natural landmark landmarks geyser heat pressure steam water hot spring power in nature the natural world standing water boardwalk two people side view men women female male full length walking tourism tourist tourists holiday maker holiday makers on holiday railing wooden