This is a detail from a painting that I saw in the Brussels Royal Museum of Fine Arts. It was displayed with paintings from the sixteenth century, but no information was posted about it. The center panel of the painting obviously depicted the Sibyl conducting Aeneas through the Underworld, but this portion of the painting struck me as a good visual representation of Vergil's concept of Furor Impius as described by Jupiter in Book I, lines 295-296: “saeva sedens super arma . . . fremet horridus ore cruento.”