Old Faithful Geyser, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

travel destination photography horizontal colour image old faithful geyser yellowstone national park unesco world heritage site wyoming united states of america north america day four people spray steam tourist tourism men women rear view clear sky non urban scene head and shoulders outdoors national park geology rock rock formation geothermal natural pattern extreme terrain hot spring nature awe erupting power in nature leisure lifestyle vacation water usa us united states american north american colour color image color outside travel destinations travel the natural world unesco world heritage sites unesco world heritage site world heritage sites vacations holiday holidays tourists holiday maker holiday makers on holiday