DOUGLAS FARMER, SENIOR EDITOR [email protected]A team of researchers led by archaeologists from the University of Arizona has used a laser mapping system from the air to uncover the buried ruins of an ancient Mayan site. After determining that an area in Tabasco in the southeast part of Mexico was worthy of further study, the researchers zeroed in on a particular location with lidar. Lidar stands for light detection and ranging, a remote sensing method that uses light from a pulsed laser to measure varying distances to the ground. A 3D image of the site known as Aguada Fénix, with the aid of lidar technology. 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