Elara
Elara is a planet sacred to the Endurians. They will only say that it holds their holiest of hollies. The Endurian counsel has forbade any from landing on the planet and has never discussed any specifics with anyone in the Ukp. Many wild rumors exist about the beautiful / terrible / powerful secrets that lay hidden there. The rest of the moons of Jupiter; Leda, Lysitea, Ananke, Carme, Pasiphæ, Brayburn are mere rocks with no significant persons or ventures thereon.