Save yourself a penny for the ferryman

Underworld is never quiet. It is filled with the sounds of Kérberos and Hekáte's hellhounds, moans of the dead souls mourning the beauty they lost, cries of the tortured souls within the Pit of Tartarus, all those sounds of anguish are ignored as if every immortal deity was deaf. The new souls would go mad with the lack of light and hearing only the screams of the dead or the captured Titans imprisoned within the impenetrable granite walls.