"This is it—the paradigm shift," archaeologist Chris Fisher told Ars. "Just like the advent of radiocarbon dating, LiDAR will have the same impact."
LiDAR, or "light detection and ranging," acts as a sort of radar with light, painting the target area with lasers and recording the time it takes to reflect back to the instruments.
An archaeologist specializing in Western Mexico, Fisher studies the way environments affect and change cultures. LiDAR has helped him repaint the picture of ancient Mexico, bringing the little-known Purepecha empire a lot more historical prominence.
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