The Eleusinian Mysteries were a feast in the Athenian religious calendar.
Their diffusion during the imperial period testifies to the great influence that the culture of Ancient Greece had on Roman culture.
The fasting, rituals, hymns and sacrifices that took place during these events were all in honour of Demeter, and therefore closely related to agriculture.
They were celebrated in the last two weeks of September in evocative night-time settings.