Cocytus

Cocytus is a mythical river from Greek mythology that flows through the underworld, specifically in the realm of the dead. It is often described as a chilly, winding stream that delineates the boundary of the underworld (Hades). In literature and popular culture, Cocytus is sometimes depicted as a frozen, icy wasteland, symbolizing a place of frozen despair or icy punishment. It represents the separation between the world of the living and the dead, embodying both physical and symbolic boundaries between life and afterlife.