I think it was the Piri Reis map that showed the accurate coastline. His map was from the 16th century but he said it was based on hundreds of ancient maps that no longer exist today. It's possible that this planet has had civilizations capable of crossing the sea and accurately mapping the planet LONG before Piri Reis' time, but nobody takes the Atlantis story seriously these days it seems. Personally, I think it's the most important "conspiracy theory", "myth", or "legend" that exists today.

I have a folder full of maps on my desktop from the Library of Congress, and many of them from the 17th-18th century have Atlantis labeled. Some show North America as Atlantis, while others have Antarctica as Atlantis. I also found a perfectly drawn Pepsi logo on a map from the 17th century. Strange enough, it's used to label an island known as Hy-Brasil. Someone needs to explain that.

I think it was the Piri Reis map that showed the accurate coastline. His map was from the 16th century but he said it was based on hundreds of ancient maps that no longer exist today. It's possible that this planet has had civilizations capable of crossing the sea and accurately mapping the planet LONG before Piri Reis' time, but nobody takes the Atlantis story seriously these days it seems. Personally, I think it's the most important "conspiracy theory", "myth", or "legend" that exists today.