>>3829069Could be evidence of time travelers too. Someone wrote something that would happen in the future, in the past. A human was time traveling 290 million years ago. Humans from the future were making those blocks, or humans who talked to beings in the future?
I'd imagine time travelers would be interested in the dawn of our species and the first civilizations seeing as how monuments like the Pyramids are a constant and last a long time. They're like an anchor in time on Earth, you can tell WHEN you are by going to Egypt and seeing what state the Pyramids are in. Or other monuments. They could serve as constants for time voyagers.