Cocytus
From BiblePortal Wikipedia
Cyclopedia of Biblical, Theological and Ecclesiastical Literature [1]
in Greek mythology, was the name of the muddy stream which Charon crossed in carrying the souls of the dead to the kingdom of shades. It is a tributary of the Acheron.
The Nuttall Encyclopedia [2]
A dark river which environed Tartarus with bitter and muddy waters.
