Stygian sleep means death. Styx, in Greek mythology, was a goddess, daughter of ocean and Tethys or daughter of Erebus ( 41 darkness; and Nix ( 41 night; according to others, who epitomized the Stygian Lake, surrounding the entrance to Hades or underworld. The old Charon was responsible for crossing it in your boat with the soul of the deceased to bring it closer to the entrance, where it was the gatekeeper, a great dog with three heads ( others say that fifty ) and a snake's tail so that no one left that place. At the entrance you could read: " who, between here, abandon all hope ". The Romans put a coin under the tongue of the deceased to pay Charon. "The passage of the Styx 34 lagoon; It is a small and beautiful picture ( 60 per 100 cms ) of the Flemish painter Joachim Patinir ( 16th century ) from the museo del Prado of Madrid
