Ancient Earthworks of
Eastern North America Photo Galleries
Photo/Travel Journal: Fall Colors Tour of Eastern Woodlands Earthworks,
Early Monumental Architecture of the Peruvian Coast
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View recent research results as Google Earth placemarks: phi_golden_ratios.kml
Navajo National Monument, Navajo Nation, Arizona
Download the 2560 x 1440 wide-screen deskpicture (1.25 MB).