"While Medusa is the most famous of the Gorgons, there were actually many of them, though only three are named in Greek mythology: Medusa, Euryale and Stenno. Only Medusa was mortal. The Gorgons were monstrous creatures covered with scales, hair of living serpents, hands of brass, and sharp fangs. It is not always clear if it was seeing the horrid visage of a Gorgon or meeting their gaze that could turn the viewer to stone. The Gorgons lived far to the west where they guarded an entrance to the underworld."