Cybermen on Gallifrey

Cybermen on Gallifrey was one of the Cyber-Documents, a set of audio-visual documents originating from Earth, which were compiled into the CyberHive. Designated Document 0, Cybermen on Gallifrey was an account of the presence of Cybermen in the Death Zone on Gallifrey. (AUDIO: The Ultimate Cybermen)

Behind the scenes
Cybermen on Gallifrey corresponds with the Doctor Who story The Five Doctors.