Dalek Asylum The Dalek Asylum was a snow y and mountainous planet used by the Dalek s as a prison and " dumping ground " for those among them who had malfunctioned , gone insane and / or become mentally scarred by battles . The Dalek Asylum was protected by a force field and a nanocloud , which converted beings that did manage to enter into Dalek puppet s . The sane Daleks left their insane fellows in the Asylum rather than kill them because they epitomised the Dalek concept of beauty : pure hatred . Even the Daleks don ' t know how many of their brethren are incarcerated on the planet , but tell the Doctor through Darla that its in the millions at least . Even amongst the deranged Daleks , there was still an area described as " intensive care " , which housed several Daleks who had survived conflicts with the Doctor on planets such as Spiridon , Kembel , Aridius , Vulcan , and Exxilon . ( TV : " Asylum of the Daleks " ) History . The " Alaska " was able to breach the Dalek Asylum ' s force field and crashed into the planet . Junior Entertainment Manager Oswin Oswald was fully converted into a Dalek by the inmates , while the rest of the crew were converted into Dalek puppet s by the Asylum ' s nanocloud . The Asylum was originally fully automated , but over the course of a year , Oswin was able to reduce the Asylum to a ruin by hacking into its systems . A year after the " Alaska " crashed on the Asylum planet , the Parliament of the Daleks feared the insane Dalek inmates could escape . In order to destroy the planet and the Daleks inhabiting it , they kidnapped the Eleventh Doctor , Amy Pond , and Rory Williams , and sent them to the surface ( by way of a gravity beam ) in order to deactivate the planet ' s defences , as no Dalek was willing to infiltrate the Asylum themselves due to fear of the insane Daleks . On the planet , the Doctor , Amy and Rory were guided by Oswin who was unaware of her status as a Dalek . Due to her hacking , Oswin could lower the Asylum ' s force field , but refused to do so until the Doctor rescued her from the escape pod she believed she was trapped in . The Doctor eventually reached the intensive care unit where the Daleks , who were normally completely catatonic , woke up in his presence due to their hatred of him . Before the Daleks could kill him , Oswin hacked the Dalek Pathweb and erased all memory of the Doctor from the Daleks to his shock as even he couldn ' t hack the Pathweb . Moments later , he learned of Oswin ' s conversion after finally finding her and she nearly gave into her programing in her despair over the situation . Breaking down , Oswin regained control and decided to end her own existence and that of the Daleks . Oswin lowered the Asylum ' s force field and ordered the Doctor to run and remember her . As the Dalek fleet fired on the defenceless Asylum , the Doctor was able to use a teleporter to teleport himself , Amy and Rory aboard the TARDIS on the Dalek ship in orbit . Once the Asylum defences were down , the Daleks fired missiles at the planet , blowing it up and killing the Daleks trapped there . To the Doctor ' s surprise , when he emerges from the TARDIS to taunt the Daleks after they detect his teleport , Oswin erased the knowledge of his existence from all the Daleks in existence , not just those on the Asylum . ( TV : " Asylum of the Daleks " ) When the Great Intelligence invaded the Doctor ' s time stream on Trenzalore to turn all of his victories into defeats , the Dalek Asylum was one of the many places where the Doctor died . When Clara Oswald followed him into the time stream , it was revealed that " Oswin Oswald " was one of many versions of Clara scattered across the Doctor ' s history with the purpose of saving his life . ( TV : " The Name of the Doctor " )