Laser-mapping Mayan ruins  MAY 12 2010

A team of archeologists used aircraft-mounted LIDAR (a laser-based distance measuring system) to map the Mayan ruins of Caracol
. The imaging revealed more of the ruins in four days than on-the-ground teams have been able to do in the past 25 years.

The Chases, who are professors of anthropology at the University of Central Florida in Orlando, had determined from earlier surveys that Caracol extended over a wide area in its heyday, between A.D. 550 and 900. From a ceremonial center of palaces and broad plazas, it stretched out to industrial zones and poor neighborhoods and beyond to suburbs of substantial houses, markets and terraced fields and reservoirs. This picture of urban sprawl led the Chases to estimate the city's population at its peak at more than 115,000. But some archaeologists doubted the evidence warranted such expansive interpretations.

"Now we have a totality of data and see the entire landscape," Dr. Arlen Chase said of the laser findings. "We know the size of the site, its boundaries, and this confirms our population estimates, and we see all this terracing and begin to know how the people fed themselves."

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