Réunion des Musées Nationaux/Art Resource, NY

So hideous is the face of the gorgon that anyone gazing upon her turns instantly to stone. In the black-figure amphora shown here, dating to around 550 B.C., Herakles fights the monstrous, three-bodied Geryon, with Medusa’s enormous, snarling head appearing to scream out from Geryon’s shield.