Photo Gallery: Angkor's Ancient Enormity Uncovered

Photo Gallery: Angkor's Ancient Enormity Uncovered
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An aerial radar survey (bottom) has revealed for the first time the extent of the ancient urban sprawl that surrounded central Angkor. The radar readingsplus ground surveys and images snapped by satellites, planes, and a NASA space shuttleallowed archaeologists to create a groundbreaking new map of greater Angkor.

The radar results provided the highest-resolution images yet of the region. The sharp images allowed the team to identify small features like household ponds and low mounds that channeled water into agricultural fields. The images also show breaks in canals, which may shed light on how and when Angkor's waterworks failed.

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—Map courtesy PNAS, radar image courtesy of PNAS, NASA/JPL and the University of Sydney
 
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