This wallpaper shows the well-preserved cliff dwellings of Tonto National Monument in Arizona. Situated within rugged terrain in the northeastern part of the Sonoran Desert, the dwellings were occupied during the 13th, 14th, and early 15th centuries.
via LiveScience.com http://ift.tt/1eaBuzO
via LiveScience.com http://ift.tt/1eaBuzO
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