Excelsior Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

algae cloud color image day environment excelsior pool heat horizontal hot spring midway geyser midway geyser basin national park nature nobody north america outdoors photography remote rock scenic view steaming travel travel destinations unesco world heritage site united states wyoming yellowstone yellowstone national park america american americas color colour daytime hot isolation outside park scenic seclusion steam stone us usa united states of america us usa view water wy