Medusa Aeschylus's "Prometheus Bound", which places both trinities of sisters far off "on Kisthene's dreadful plain": Near them their sisters three, the Gorgons, winged With snakes for hair— hatred of mortal man— While ancient Greek vase-painters and relief carvers imagined Medusa and her sisters as having monstrous form, sculptors and vase-painters of the fifth century began to envisage her as being beautiful as well as terrifying. In an ode written in 490 BC Pindar already speaks of "fair-cheeked Medusa". In a late version of the Medusa myth, related by the Roman poet Ovid ("Metamorphoses" 4.770), Medusa was originally a ravishingly beautiful
Greek mythology existing literary evidence. Greek mythology has changed over time to accommodate the evolution of their culture, of which mythology, both overtly and in its unspoken assumptions, is an index of the changes. In Greek mythology's surviving literary forms, as found mostly at the end of the progressive changes, it is inherently political, as Gilbert Cuthbertson has argued. The earlier inhabitants of the Balkan Peninsula were an agricultural people who, using Animism, assigned a spirit to every aspect of nature. Eventually, these vague spirits assumed human forms and entered the local mythology as gods. When tribes from the north of the