|Planet of Origin:||Unknown|
|First Appearance:||The Infinite Cyclorama|
The Infinite Cyclorama was a massive, mysterious, and highly dangerous interstellar phenomenon that appeared in the Second Inspector serial "The Infinite Cyclorama" and then the Fourth Inspector-era "The Return of the Infinite Cyclorama". The exact nature and purpose of the Cyclorama remained very vague, even after prolonged exploration of its physics-defying interior by the two Inspectors and their Associates, though it was strongly implied there was some sort of living intelligence powering its core.
- The Cyclorama's re-emergence, and its simultaneous destruction of a Blorgon Battlehub in its second appearance is often cited as a high point in special effects produced by the classic-era Inspector Spacetime.