Once every fifty years they put out all the sacred fires and go up on the high mountain tops just before dawn, and wail and mourn and break pottery, imploring the shining orb to bring back him

"Who dwelt up in the yellow sun

And sorrowing for man's despair

Slid by his trailing yellow hair

To earth to rule, by love and bring

The blessedness of peace."

The Plumed Serpent, Quetzalcoatl