IMAGES: Cliff dwellings, ruins at Colorado's Mesa Verde National Park
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Mesa Verde National Park protects over 4,000 known archeological sites, including 600 cliff dwellings. These sites are some of the most notable and best preserved in the United States.
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Cliff Palace at Mesa Verde National Park. (Photo by DEA / L. ROMANO/De Agostini/Getty Images)
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Park rangers survey the Cliff Palace ruins. The park's stone and adobe cliff dwellings were built by Ancestral Puebloans from the 1190's to the late 1270's.
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A closer look at Cliff Palace (Photo by DEA / L. ROMANO/De Agostini/Getty Images)
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Another closer shot inside Cliff Palace. The courtyard and ladder entrances to a kiva. (Photo by Werner Forman/Universal Images Group/Getty Images)
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Long House at Mesa Verde National Park. (Photo by DEA / L. ROMANO/De Agostini/Getty Images)
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Another view of Long House at Mesa Verde National Park. (Photo by DEA / L. ROMANO/De Agostini/Getty Images)
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A trail leads visitors to Spruce Tree House ruins in Mesa Verde National Park.
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Spruce Tree House is the best preserved cliff dwelling at Mesa Verde National Park.
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Square Tower House at Mesa Verde National Park. (Photo by DEA / L. ROMANO/De Agostini/Getty Images)
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Chapin Mesa, New Fire House and Fire Temple (Photo by DEA / L. ROMANO/De Agostini/Getty Images)
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Cliff dwelling at Mesa Verde, The rectangular rooms may have served as dwellings or store rooms. (Photo by Werner Forman/Universal Images Group/Getty Images)
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The Far View Sites Complex is available for self guided tours to visitors.
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Far View Kivas, ancient rooms and dormitories (Photo by DEA / L. ROMANO/De Agostini/Getty Images)
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Visitors stop at the Far View Visitor Center at Mesa Verde National Park. Mesa Verde, Spanish for green table, offers a look into the lives of the Ancestral Pueblo people who lived here from 600 to 1300. (Photo by Doug Pensinger/Getty Images)





