To learn the truth, experts analyzed the book’s pages. They determined that both the paper and the ink were types used by the Maya people, who lived centuries ago in what is now Mexico and Central America. (See map, below.) The year the book was found provided another clue. In 1965, scholars didn’t yet know about some of the ancient gods depicted in the text, which means that the book couldn’t have been forged.
Ultimately, the team of researchers verified that the text is about 800 years old. Says Stephen Houston, one of the experts: “It gives us a glimpse into life during a time period that we don’t fully understand.”