The Templo Mayor was partially a symbolic representation of the Hill of Coatepec, where according to Mexica myth, Huitzilopochtli was born. Huitzilopochtli emerged from his mother Coatlicue fully grown and fully armed to battle his sister Coyolxauhqui and her brothers the Centzon Huitznahua who intended to kill him and their mother. Huitzilopochtli was victorious, slaying and dismembering his sister. Her body was then thrown to the bottom of the hill. As the southern half of the Great Temple represented Coatepec (on the side dedicated to Huitzilopochtli), the great stone disk with Coyolxauhqui's dismembered body was found at the foot of this side of the temple. The northern half represented Tonacatepetl, the mountain home of Tlaloc.