I have been obsessed with these temples for the past year and just want to know of the society that built them. They must have been at least somewhat advanced to be able to build such grand structures.
But then again, there has never been any remains of cities found, so they must have been just a simple agricultural civilization with the capability of building grand temples to worship their "fat lady" statues.

Any one familiar in this field, know much about the people of this ancient period?