Riviera Maya Vacation - Joe McClintock
This picture of the Mayan pyramid was taken just before sunset on March 22nd, the day following the Equinox.  The Equinox held special significance to the Mayans.  The pyramid was designed such that on the equinox a series of light and dark shadows crawl down the staircase on the left as the sun sets emulating a snake.  This also is seen to a slightly lesser degree on the day before and after the Equinox.  If you look on the staircase on the left you can see the bright areas set off by shadows forming the body and extending to the head of the snake

This picture of the Mayan pyramid was taken just before sunset on March 22nd, the day following the Equinox. The Equinox held special significance to the Mayans. The pyramid was designed such that on the equinox a series of light and dark shadows crawl down the staircase on the left as the sun sets emulating a snake. This also is seen to a slightly lesser degree on the day before and after the Equinox. If you look on the staircase on the left you can see the bright areas set off by shadows forming the body and extending to the head of the snake