Contrary to popular perception, Persephone's time in the underworld does not correspond with the unfruitful seasons of the ancient Greek calendar, nor her return to the upper world with springtime.The myth of the capture of Persephone seems to be pre-Greek.Though Demeter is often described simply as the goddess of the harvest, she presided also over the sacred law, and the cycle of life and death.She and her daughter Persephone were the central figures of the Eleusinian Mysteries that predated the Olympian pantheon. 1400–1200 BC found at Pylos, the "two queens and the king" may be related with Demeter, Persephone and Poseidon.
He took her in, to nurse Demophon and Triptolemus, his sons by Metanira.
Thus, humanity learned how to plant, grow and harvest grain.
The myth has several versions; some are linked to figures such as Eleusis, Rarus and Trochilus.
In the Greek version, Ploutos (πλούτος, wealth) represents the wealth of the corn that was stored in underground silos or ceramic jars (pithoi).
Similar subterranean pithoi were used in ancient times for funerary practices.
Poseidon represents the river spirit of the underworld and he appears as a horse as it often happens in northern-European folklore.