54 minutes of extras have been cleared to accompany the four part story originally shown in 1978.
- Underworld - In studio footage 17'27"
- Into The Unknown - The making of Underworld 30'41"
- Photo Gallery 5'52"
The Box set is released in the UK at the end of March.
A 23" deleted shot from the Creature from the Pit has also been cleared in preperation for that story's release and the Doctor Who Restoration Team have published details of their work on the early March release of The Space Museum/The Chase.