"Charon ushers you across the river Acheron, and you find yourself upon the brink of grief's abysmal valley. You are in Limbo, a place of sorrow without torment. You encounter a seven-walled castle, and within those walls you find rolling fresh meadows illuminated by the light of reason, whereabout many shades dwell. These are the virtuous pagans, the great philosophers and authors, unbaptised children, and others unfit to enter the kingdom of heaven. You share company with Caesar, Homer, Virgil, Socrates, and Aristotle. There is no punishment here, and the atmosphere is peaceful, yet sad."
Sounds about right.
"The tri-tone is the Devil's interval, and he demands resolution." - Richard Lloyd