The pyramid of Kukulcan is seen during sunrise at the archaeological zone of Chichen Itza in Yucatan State, December 21, 2012. Mystics, hippies and tourists descended on the ruins of Maya cities to mark the close of the 13th bak'tun - a period of around 400 years - and many hoped it would lead to a better era for humanity. REUTERS/Victor Ruiz Garcia (MEXICO - Tags: SOCIETY)