Antro 2021 is the Festival of the Phlegraean Fields Archaeological Park. An opportunity to experience and interpret the Park's places through artistic expression. Music, theater, dance, reading and performances hosted in the main monuments of the Phlegraean territory. The Festival revolves around the concept of Antro and the first edition declines the theme with a specific accent, always inspired by the Virgilian tradition to add a further interpretative interpretation: "One hundred streets, count doors, one hundred voices", a suggestion taken from the book VI of the Aeneid, an invitation to cultivate polyphony as the lowest common denominator of the Phlegraean cultural landscape.