The Greek underworld, in mythology, is an otherworld where souls go after death, and is the original Greek idea of afterlife. At the moment of death the soul is separated from the corpse, taking on the shape of the former person, and is transported to the entrance of the Underworld. The Underworld itself is described as being either at the outer bounds of the ocean or beneath the depths or ends of the earth. It is considered the dark counterpart to the brightness of Mount Olympus, and is the kingdom of the dead that corresponds to the kingdom of the gods. Hades is a realm invisible to the living, made solely for the dead.