These structures are still underground and have been overlooked until now.
How were they found? you ask.
Well, it seems that Satellite images were obtained using infra-red cameras and these images revealed the underground structures.
Now that they have been discovered, Archaeologists from the University of Alabama at Birmingham (UAB) are evaluating the images and interesting things are being found.
To learn more including a 1 minute 7 second video showing the images, HERE'S THE LINK
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