Exhibit A:
America Before: The Key to Earth's Lost Civilization https://www.amazon.com/dp/1250153735
JFC.
https://amazon.com/America-Before-Earths-Lost-Civilization/dp/1250153735
Click the "LOOK INSIDE" button above the image.
Thanks for the direction. I didn't follow the implication of your earlier comment, which is why I asked for additional information.
If anyone else is interested it seems that some people interpret these observations as evidence of sophisticated ancient civilizations, perhaps even with alien origins. Which in my opinion is fascinating and wackadoo to the n^(th) degree in equal measure.
But draw your own conclusions!
There is a book written about it. It’s a great read.
http://www.amazon.com/America-Before-Earths-Lost-Civilization/dp/1250153735
Now it’s all still theory. But it’s an interesting theory none the less.
Graham Hancock - America Before