This was
your sky.

Equinox at the Pyramid of the Feathered Serpent

Near an equinox, the Mayan pyramid El Castillo in Mexico's Yucatán Peninsula casts a unique shadow. During the late afternoon, if the sky is clear, the pyramid's own shadows merge into the illusion of a slithering viper. This effect is known as the feathered serpent descending the pyramid. Also called the Temple of Kukulkan, this impressive step-pyramid is 30 meters tall.