Greek underworld

Hermes Psychopompos sits on a rock, preparing to lead a dead soul to the underworld. Attic white-ground lekythos, ca. 450 BC, Staatliche Antikensammlungen (Inv. 2797)

In Greek mythology, the underworld or Hades (Ancient Greek: ᾍδης, romanized: Háidēs) is a distinct realm (one of the three realms that make up the cosmos) where an individual goes after death. The earliest idea of afterlife in Greek myth is that, at the moment of death, an individual's essence (psyche) is separated from the corpse and transported to the underworld. In early mythology (e.g., Homer's Iliad and Odyssey) the dead were indiscriminately grouped together and led a shadowy post-existence; however, in later mythology (e.g., Platonic philosophy) elements of post-mortem judgment began to emerge with good and bad people being separated (both spatially and with regard to treatment).