Campania for its mild climate, the volturno waters and the presence of volcanoes, their ashes, is considered fertile land par excellence.
The egg, as a collective symbol of fertility, becomes a peculiar and characterizing sign. Its fragile strength makes it geometrically perfect, able, according to Publio Virgilio Marone, to support Castel dell'Ovo and the Neapolitan city. Tied through the symbol of the hen, to the Greek mythology of the Siren Parthenope, of which Homer narrates in the Odyssey.