The River Styx, the dark river leading to the Underworld.
There were actually a few such rivers that were called the River Styx and led to the Underworld, but they were typically in the most remote parts of Feinan.
According to official sources, the Styx was the main way to lead souls to the Underworld.
Each River Styx was very wide, and the rivers didn't just flow through a plane normally. They actually flowed downward through the Universe's planes.
They ended in the mysterious, cold Underworld.
Marvin knew that this dark river was only a small branch.
There was a white wharf on the river shore, and many [Candle Boats] were drifting near the wharf.
Ordinary souls would be gathered by the Reapers before being transferred down the river through Candle Boats.
Each Candle Boat represented the soul of someone that had passed away.
The River Styx was this world's most dangerous place.
