Mesa Verde National Park, Spruce Tree House, UNESCO World Heritage Site, Colorado, United States of America, North America

travel destination travel destinations travel photography colour image colour color image color vertical outdoors outside day nobody mesa verde national park unesco world heritage site unesco world heritage sites unesco world heritage site world heritage sites colorado united states of america usa us united states north american north america desert dry arid high angle view high angle elevated view from above looking down national park anasazi ruins archaeology international landmark landmarks ancient civilisation history historical historic heritage cultural culture old the past old ruin ruins ruined old ruin old ruins remains discovery building building exterior cliff cliff dwelling rock formation traditional culture tradition traditional built structure physical geography topography geology erosion stone wall