Man.... America was a happening place before Columbus. Every and I mean EVERY ancient civilization visited the Americas... and left maps... in ancient times. From Ireland to Japan, from the Hittites through Rome to the Templars all discovered America, left artifacts proving it, and then went home and made maps that everyone forgot about. Ancient Native American rock carvings? Nope, now those are from the Persians, Xerxes, who ordered the Atlantic ocean to part so his army could carve a few things into a rock in Utah and leave. In fact, if this program is to be believed, the Templars teamed up with the Assassins and fought off an invasion by the Ancient Aliens somewhere in present day Nebraska. And people are claiming that this intriguing, that it makes them think... about as deeply as chewing gum and walking makes them think.