The home planet of the Vhnori, existing in another dimension, whose people send their dying through spatial ruptures in the belief that they will reach an afterlife called the Next Emanation.
The Vhnori homeworld is seen in Emanations. Its people place the dying in cenotaphs that are swallowed by naturally occurring subspace vacuoles, trusting that they will awaken in a higher state of being with their ancestors.
In fact the bodies arrive, dead, on asteroids in the ring system of a planet in the Delta Quadrant, where Voyager's away team finds them. One vacuole exchanges Harry Kim for the body of a woman named Ptera, and he becomes the first visitor from the supposed afterlife. His account of what he saw unsettles the thanatologist Neria and a patient, Hatil Garan, who is due to die for his family's sake.
Kim takes Hatil's place in the cenotaph in order to get back, and is revived aboard Voyager.