Phlegethon
From Tardis Wiki, the free Doctor Who reference
Phlegethon was a planet which the Sentinels of the New Dawn intended to colonise. They placed themselves in suspended animation aboard a Leviathan, which they populated with clones, and set on a course towards the planet. Centuries into the journey their ship was visited by the Sixth Doctor and Peri Brown. (AUDIO: Leviathan)
