Part of the Underworld, where heroes go when they die. Elysium includes what would have once been islands in the middle of a lake (The Isles of the Blessed), surrounded by lush fields. When it is first seen in Episode Four, the Isles of the Blessed have been covered in a landslide, with jagged spears of rock surrounded by decay.
Mentioned by Theodore Mannison in Episode Two: Setting the Bar pt. 2. First encountered by the party