RE: How Accurate is Graham Hancock in His Theories?

Amazon is a great place for archaeological exploration. They had massive civilizations unlike most places, cities did not get built over them. instead they were covered by the forest.

One of the most underrated fields IMHO is astro-archaeology. When you keep seeing a civilization mentioning some events that happened thousands of years before the accepted origin of civilization, we have to accept that either they had astronomy that was many millennia ahead of rest of the world or someone was there to see these things happen and it was passed down over the ages.