FILE - In this March 20, 2010 file photo, a man performs a ritual as he looks toward the descent of the Kukulkcan serpent, whose image is seen illuminated along the edge of the stairs o

 

              FILE - In this March 20, 2010 file photo, a man performs a ritual as he looks toward the descent of the Kukulkcan serpent, whose image is seen illuminated along the edge of the stairs o
FILE - In this March 20, 2010 file photo, a man performs a ritual as he looks toward the descent of the Kukulkcan serpent, whose image is seen illuminated along the edge of the stairs of the Mayan Chichen Itza pyramid, during the Spring equinox in Chichen Itza, Mexico. A chorus of books and movies tried to link the Mayan calendar to rumors of impending disasters ranging from rogue black holes and sun-storms to the idea that the Earth's magnetic field could 'flip' on that date. Archaeologists says there is no evidence the Maya ever made any such prophesy. (AP Photo/Israel Leal, File)