the moon goddess (1978). After years of painstaking excavation, López Luján and his crew have discovered, in a deep pit beside the monolith, some of the most exotic Aztec offerings ever found.

(Rebecca Stacey) "The two heads in this snake is the symbol of dualism, which was a fundamental part of the Aztec religion. All the deities have a dual nature - male, female, birth, death ...