Evidently this is being blown way out of proportion, and other researchers have been studying this region for some time (to say nothing of the actual people living there, who have known about these "lost cities" all along): http://blogs.berkeley.edu/2015/03/03/theres-a-real-archaeolo...
“Fisher emphasised that archaeologists know extraordinarily little about the region’s ancient societies relative to the Maya civilisation.” I appreciate the candor. Archeology is a science ahead of its time. The past is extremely difficult to parse accurately—not to mention biases and political correction. It's always nice when archeologists are careful to not draw conclusions on limited data.
