Mexican pyramids of Teotihuacan just 45 min from Mexico City. At one time this was one of the largest cities in the world with over 150,000 residents. 1,000 years before the Aztec population (who found it abandoned ). I could write a whole novel of questions. How did they make it the exact same size footprint as Giza pyramids in Egypt and laid out the same pattern ? What happened that the entire population vanished and left it a ghost town for the Aztecs? How did they move so much earth to make