Planet (Etheria)
From Tardis Wiki, the free Doctor Who reference
The First Doctor and Vicki Pallister were once trapped on a planet by pirates. Razor weed was a plant that grew on the world.
The atmosphere of the planet was alive; combined with the sun's radiation, it formed the Etherlands, a naturally occurring hallucinogen which acted as a sensory-deprivation system. (AUDIO: Etheria)
