wasn't the existence of the pyramids recorded in history at some point in time? They may not be on the maps but people talked about thim at least. It just sounds too crazy for the pyramids to just spring up like that.The thing is, it is possible to be wrong. We can be wrong, somebody else can be wrong. This is a very tricky topic we are dealing with.
What truly matters is the type of evidence. Some evidence is solid, and some is questionable. We have no clue about the volume of the retroactively produced maps. Those exist in great numbers.
For example Egyptian Pyramids supposed to exist for thousands of years. But upon closer examination of the maps we learn, that the Pyramids somehow escaped mapping up to the point when Napoleon went to Egypt. That, for a second, took place 1798–1801. Does it mean that Great Pyramids were built at the end of the 18th century? I don't know.
There is only one real old map where 3 Pyramids are present, that I know of. Which coincidentally makes me think that that specific map was doctored.