Eleusinian MysteriesCeremonies in honour of the Greek deities Demeter, goddess of corn, and her daughter Persephone, queen of the underworld, celebrated in the precincts of the temple of Demeter at Eleusis, in the territory of Athens. They formed the basis of a secret cult, requiring initiation for entrance. The rituals were agrarian in origin and had a strong chthonic (pertaining to the underworld) aspect, dealing with the cycle of growth and decay represented by Persephone's half-yearly absence from her mother.