The fact is: the evolution of human civilization and higher education is still a mystery to mankind. Evidence more than the older civilizations had amazing understanding of astronomy, science and mathematics that rivals some cultures today. But while these ancient civilizations would be a step in the Stone Age? These ancient civilizations have built huge structures that have stood the test of time ... and even with today's technology and machinery would be difficult to replicate.
How do they do this? Because they feel that it was so important for future generations to see their work? Looking at the historical accounts of the Hopi Indians, Egyptians, Mayans, Aztecs, and many other ancient civilizations, all speak of the strange phenomena that came from heaven as our modern day UFOs. Most of these ancient civilizations had beliefs about the "gods" that interact with or created them.