In Greek mythology
was a primordial god, personification of darkness, offspring of Chaos
alone. He was brother of Nyx
and father of Aether
by himself and, with Nyx, Hemera
and the Keres
According to some later legends, Erebus was part of Hades, the underworld. It was where the dead had to pass immdiately after dying. After Charon ferried them across the river Acheron, they entered Tartarus, the underworld proper.
Erebus was often used as a synonym for Hades, the god.
Mount Erebus is an Antarctic volcano.
Aristophanes, Birds; Hesiod, Theogony.