A team of researchers using LiDAR have discovered a very large 2,000-year-old Mayan civilization in northern Guatemala.
LiDAR is a detection system similar to radar but is based on laser light rather than radio waves. In recent years, it has been used to scan parts of dense tropical rain forests for signs of ancient civilizations. Lasers used in such systems are able to penetrate vegetative canopies over rain forests, revealing what is on the ground beneath them.
In this new effort, the researchers flew over parts of Guatemala as part of a mapping effort, when they came across what they describe as a vast ancient Maya civilization. In studying their maps, they were able to see that the ancient civilization was made up of more than 1,000 settlements covering approximately 650 square miles, most of which were linked by multiple causeways. The researchers were also able to see that the people who once lived in the settlements had been densely packed—a finding that goes against theories suggesting early Mesoamerican settlements tended to be sparsely populated.
The causeways (cleared, raised beds used as roads) added up to 110 miles of traversable pathways, making it relatively easy for the people in the civilization to visit other settlements. The researchers note that the road network would have allowed for collective labor efforts.
The researchers also found evidence of large platforms and pyramids in some settlements, which, they note, suggests some of them served as centralized hubs for work, recreation and politics. They note also that some of the settlements had ball courts that prior research has shown were used for playing a variety of sports native to the region. The researchers also found that the people of the civilization had built canals for moving water and reservoirs for holding it to allow for use during dry periods.
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