Who Built This Ancient Megastructure? Modern Cranes Cannot Cope With These Stones

How could builders thousands of years ago carve and position monolithic granite blocks up to 8 meters tall so precisely, and how could they select and shape the blocks so perfectly, ensuring every protrusion on one stone matched a corresponding cavity on the other? Is it possible that the ancient South Americans had the ability to melt and shape stone?

Paypal – https://www.paypal.me/JCMatrix1

source