Eleusinia

"Eris Morn returned to the Vestian Outpost. Because she spoke well, it was agreed that aid would be traded for intelligence and a long-term alliance. In this way, the Awoken were the first to know of the Great Navigator: his philosophies, his strategies, his weaknesses. And as the coven contemplated the possibilities laid wide before this god-king's far-flung sword, it was decreed that they would build a throne world beneath an energy well as blind as the ferryman Charon."

- Throne

Eleusinia is the Throne World of Mara Sov and the setting of "The Shattered Throne" Dungeon. It was created by Mara using knowledge of the Sword Logic provided by Eris Morn and with the aid of her Techeuns and Riven. Since Mara's apparent death in the Battle of Saturn, it has become overrun by Taken due to Oryx's desecration of the realm. It is now a staging ground for Savathûn's daughter, Dûl Incaru, the Eternal Return. It is accessible through a gateway beneath the Blind Well in the Dreaming City.

Trivia

 * Eleusinia is the second known Throne World formed by a being that is not a Hive or Worm. Notably, it was constructed "artificially" with the use of Riven's wish-magic and the Sword Logic.
 * The name Eleusinia is similar to the ancient Greek city of Eleusis, which is also the site of the similarly named Eleusinian Mysteries which are yearly initiations held for the cult of Demeter and Persephone.

List of appearances

 * Destiny 2
 * Forsaken
 * Beyond Light
 * ''Season of the Lost