Editing Thermal chamber

{{first pic|Thermal chamber.jpg|[[Eldrad]] with the [[Fourth Doctor]] and [[Sarah Jane Smith|Sarah]] in the [[Kastrian]] thermal chambers. ([[TV]]: ''[[The Hand of Fear (TV story)|The Hand of Fear]]'')}}
The '''thermal chambers''' were a system of [[cave]]s beneath the surface of [[Kastria]] utilised as living space by the [[Kastrian]]s. There, they were sheltered from [[solar wind]]s. The [[race bank]] was kept in the chambers, as was the [[regenerator chamber]], on floor three zero six.

Eldrad's development of the [[spatial barrier]]s allowed the Kastrians to live on the surface but, when he destroyed them, he forced his people back underground. Rather than face what [[Rokon|King Rokon]] described as "a miserable subterranean existence", the Kastrian people "chose final oblivion". 

One hundred and fifty million years later, Eldrad returned to Kastria in a female form and went into the thermal chambers. After triggering a [[booby trap]], left in anticipation of his return, and becoming a victim of a specialised [[acid]], Eldrad had the [[Fourth Doctor]] and [[Sarah Jane Smith]] take her to the regenerator chamber. They jointly supported Eldrad on their way, with the Doctor carrying her over an abyss.

Once he was revitalised and returned to his "true" male form, he searched the chambers for Rokon and found his body. Finding the race bank empty, the Kastrians having destroyed its contents, Eldrad decided to return to [[Earth]] and rule over the [[human]] race. He pursued the Doctor and Sarah through the thermal chambers. They positioned themselves either side of the abyss and used [[the Doctor's scarf]] to trip Eldrad, who plummeted into the depths. ([[TV]]: ''[[The Hand of Fear (TV story)|The Hand of Fear]]'')
[[Category:Locations visited by the Fourth Doctor]]