A man wearing traditional costumes takes part in a Mayan ceremony to receive the new cycle of the Mayan Calendar, at the Teotihuacan archaeological site, in the state of Mexico, Mexico, on Dec. 21, 2012. (Xinhua/Alejandro Ayala)

A man wearing traditional costumes takes part in a Mayan ceremony to receive the new cycle of the Mayan Calendar, at the Teotihuacan archaeological site, in the state of Mexico, Mexico, on Dec. 21, 2012. (Xinhua/Alejandro Ayala)

A man wearing traditional costumes takes part in a Mayan ceremony to receive the new cycle of the Mayan Calendar, at the Teotihuacan archaeological site, in the state of Mexico, Mexico, on Dec. 21, 2012. (Xinhua/Alejandro Ayala)

A man wearing traditional costumes takes part in a Mayan ceremony to receive the new cycle of the Mayan Calendar, at the Teotihuacan archaeological site, in the state of Mexico, Mexico, on Dec. 21, 2012. (Xinhua/Alejandro Ayala)

A balloon flies near the Sun pyramid at the Teotihuacan archaeological site, in the state of Mexico, Mexico, on Dec. 21, 2012. (Xinhua/Alejandro Ayala)

A visitor attends a ritual ceremony around the Kukulkan Pyramid during the new cycle Mayan calendar celebration in the archaeological site of Chichen Itza, in Tinum municipality, in Yucatan State, southern Mexico, on Dec. 21, 2012. (Xinhua/Russel Chan)

Two visitors kiss during a ritual ceremony around the Kukulkan Pyramid during the new cycle Mayan calendar celebration in the archaeological site of Chichen Itza, in Tinum municipality, in Yucatan State, southern Mexico, on Dec. 21, 2012. (Xinhua/Russel Chan)

Visitors attend a ritual ceremony around the Kukulkan Pyramid during the new cycle Mayan calendar celebration in the archaeological site of Chichen Itza, in Tinum municipality, in Yucatan State, southern Mexico, on Dec. 21, 2012. (Xinhua/Russel Chan)

Visitors attend a ritual ceremony around the Kukulkan Pyramid during the new cycle Mayan calendar celebration in the archaeological site of Chichen Itza, in Tinum municipality, in Yucatan State, southern Mexico, on Dec. 21, 2012. (Xinhua/Russel Chan)

Two visitors are seen during a ritual ceremony around the Kukulkan Pyramid during the new cycle Mayan calendar celebration in the archaeological site of Chichen Itza, in Tinum municipality, in Yucatan State, southern Mexico, on Dec. 21, 2012. (Xinhua/Russel Chan)

A visitor approaches the Kukulkan Pyramid during the new cycle Mayan calendar celebration in the archaeological site of Chichen Itza, in Tinum municipality, in Yucatan State, southern Mexico, on Dec. 21, 2012.(Xinhua/Russel Chan)