Aerial photos show some of the more visible remnants of Angkor's urban sprawl. Clockwise from top left: household ponds, canals, smaller “village” temples, and one-sided embankments that both channeled water and served as roadways.
Archaeologists matched these recognizable features to shapes shown by radar. They discovered structures in more remote regions that are covered by forest or made hazardous by land mines left over from Cambodia's wars
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