At this point, the evidence is overwhelming and impossible to refute. It is a shame we don't have the written information from this civilization, however it is quite possible that some of it still does exist. The real question is where is this information hiding and who has possession of it?

That is a great watch, thanQ!

definitely worth a watch.

Thanks for suggesting.

The Egyptians, Mayan, Aztecs ......where squatters and graffiti artists. The ancient structures where built by an advanced Civilization.