Laser mapping is increasing the speed and scale of archeological discoveries and has now revealed the earliest and largest ceremonial structure ever built by the Maya — covering more ground than the Great Pyramid at Giza, Egypt
For decades, archeologists have keep their eyes down to the ground as they slashed through jungles, attempting to spot traces left by lost civilizations like the Khmer Empire in Cambodia and the Maya in Mexico and Central America.
It's painstaking work that took entire careers to complete. But now, archeologists -- or at least their tools -- are taking to the skies. Ancient 'lost city' of the Khmer Empire uncovered in CambodiaA new remote-sensing technique called lidar, or light detection and ranging, can produce detailed models of any terrain, revealing secrets usually hidden by tree canopy and forest.
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