This may be the source of their extraordinarily accurate calendar. A new Mexican documentary titled "Revelations of the Mayans 2012 and Beyond" claims that the ancient Mayans had contact with alien visitors who left evidence behind.

The movie makers say that the film is being made with the cooperation of the Mexican government for "the good of mankind," and that Mexico’s president ordered all government bureaus to work with the filmmakers.
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The Mayan people of Guatemala don’t agree with the December 21st, 2012 prophecy, and there are more Mayan ruins there than in any other place in South America.

In the December 30th edition of the Guardian, Kevin Rushby writes, "The Mayans are a people much interested in time and number. They count in 20s, a human-size unit–all the fingers and toes–which they multiply by the number of major joints in the body–13–to make 260. Long ago they noted that the planet Venus moved from being an evening to a morning star in 260 days, the same time it takes to grow a crop of (corn) and to complete a human pregnancy. "
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How did corn, beans and tobacco come to the Indians of the US? We used to think they came from Native Americans who brought them back from their trips across the border into Mexico. But if a recent archaeological find in Georgia proves to be a Mayan ruin, it could be that the Maya brought their agricultural products with them, and that their range northward was far more extensive than previously believed.
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Mexico’s archeologists don’t put much credence in the ancient Mayan prediction that the world will end in December of 2012, but at a recent press conference they admitted that a second reference to that date has been found on a carved fragment at a southern Mexican Mayan site. Is this the secret they’ve been hinting about?
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