They were Mysteries and not told to those not instated into the cult.
It could be Eleusina where the Eleusinian Mysteries, one of the most important religious event of Ancient Greece, took place in her honor.
Hades favored the city of Eleusis, which is located near Athens, Greece. This city was significant due to its association with the Eleusinian Mysteries, ancient religious rites that honored Demeter and Persephone, his daughter. The mysteries celebrated the cycle of life and death, reflecting Hades' domain over the underworld and the afterlife.
Demeter was the ancient Greek goddess of agriculture, fertility, and the harvest. She was primarily associated with the growth of crops and the nurturing of the earth, which made her a central figure in agrarian societies. Demeter was also known for her role in the myth of Persephone, her daughter, whose abduction by Hades led to the changing seasons and symbolized the cycle of life and death. Her worship included the Eleusinian Mysteries, which were significant religious rites promising initiates a better afterlife.
Persephone was the patron goddess of Eleusis, an ancient city near Athens, Greece. She is closely associated with the Eleusinian Mysteries, a set of religious rites held in her honor, which celebrated the cycle of life, death, and rebirth. Her mythology is deeply intertwined with the agricultural cycles, symbolizing fertility and the changing seasons.
Hades, the ancient Greek god of the underworld, is primarily associated with the city of Eleusis, where the Eleusinian Mysteries were celebrated in his honor. Additionally, the city of Thebes is linked to Hades through myths involving characters like Orpheus and the descent into the underworld. Though not a city in the traditional sense, the realm of the underworld itself, often referred to as Hades, is central to his mythology.
Demeter.
Demeter's worship is known as the Eleusinian Mysteries.
Probably the Eleusinian Mysteries to honor Persephone and her mother, Demeter.
The Telesterion at Eleusis was one of the primary centres of the Eleusinian Mysteries.
Triptolemos is a god of the Eleusinian mysteries who presided over the sowing of grain-seed and the milling of wheat.
The Eleusinian Mysteries (the cult of Demeter and Persephone) were the most famous of the secret religious rites of ancient Greece.
Victor Magnien has written: 'Les mysteres d'Eleusis' -- subject(s): Eleusinian mysteries
Deity Dangerous Deo ("of the earth")
He learned how to enter and exit the underworld unharmed by being initiated in the Eleusinian mysteries.
It could be Eleusina where the Eleusinian Mysteries, one of the most important religious event of Ancient Greece, took place in her honor.
Triptolemus was not really a ruler. He was the son of King Celeus of Eleusis in Attica, and was one of the original priests of Demeter. He gained the knowledge of the Eleusinian mysteries.
It could be Eleusina where the Eleusinian Mysteries, one of the most important religious event of Ancient Greece, took place in her honor.