Later, the conception of who could enter was expanded to include those chosen by the gods, the righteous, and the heroic. Only mortals related to the gods and other heroes could be admitted past the river Styx. It was initially separated from the Greek underworld – the realm of Hades. ə m/, / ɪ ˈ l ɪ ʒ ə m/ ), otherwise known as the Elysian Fields ( Ancient Greek: Ἠλύσιον πεδίον, Ēlýsion pedíon) or Elysian Plains, is a conception of the afterlife that developed over time and was maintained by some Greek religious and philosophical sects and cults. Goethe's Ankunft im Elysium by Franz NadorpĮlysium ( / ɪ ˈ l ɪ z i.