Gates of Elysium
From Tardis Wiki, the free Doctor Who reference
The Gate of Elysium was where the Doctor believed Davros had been killed during the Time War when his command ship flew into the jaws of the Nightmare Child. The Doctor attempted to save Davros but failed.
However, Dalek Caan had actually been able to save Davros from being killed at Elysium by initiating an emergency temporal shift after an encounter with the Doctor. (DW: Evolution of the Daleks)
The shift allowed Caan to arrive just before Davros died and take him to another point in time and space. Dalek Caan lost his sanity by interfering with the Time War, every detail of which was time locked, but by saving Davros, he had ensured the creation of the New Dalek Empire. (DW: The Stolen Earth)
