According to myth, Medusa was one of three sisters whose charge was to guard the entrance to the underworld. It is said that they were a race of warlike women who turned to stone all those who beheld them. Still others say that Medusa was a beautiful woman with magnificent hair, an equal to Athena in beauty. This legend tells of how Poseidon seduced Medusa in the temple of Athena and to punish this act, Athena changed Medusa’s hair into snakes. Later...