In the Maya Mythological text, Popol Vuh. Camazotz was a creature that lived in the Bat House of Xib'alb'a, the Maya Underworld with his bats. Hero twins, Jun'ajpu' and Xb'alamkej, were placed in the house as part of their test by the lords of the underworld for making noise. The two were to spend the entire night there, but they had squeezed themselves into their own blowguns in order to defend themselves from the bats. However, when Jun'ajpu' briefly peeked out to see if the sun came up, Camazotz cut his head off and carried it to the ball court. It was used in the next ball game, Xb'alamkej replaced his brother's head with a gourd and won back the real head in the game.