Chichén Itzá: Pyramid Serpent Shadow Equinox Alignment

The Kukulkán Pyramid at Chichén Itzá hides a remarkable shadow effect that only occurs on the March and September equinoxes every year. This ancient Maya site flourished during the 5th Century, and was later built over by the Itzá culture and the Toltecs. Constructed over a Cenote the main pyramid has three layers built over by these later cultures. There is a giant cenote with a Sacbe leading to it and a gigantic ball-court, the largest in Mexico. Includes exclusive aerial footage.