Exploration Earth: The Time Machine

Exploration Earth: The Time Machine
Doctor Who Radio play
Cover of the CD release.
Cast
Production
Written byBernard Venables
Produced byMike Howarth
David Lyttle
Production codeN/A
SeriesN/A (aired during Series 14)
Running time20 min
First broadcast4 October 1976 (1976-10-04)

Exploration Earth: "The Time Machine" is an episode of the BBC Schools radio drama series Exploration Earth, a series exploring geography. It was the third episode in this series. As it was an educational programme, it used the Doctor Who format and elements to explore the processes of the creation of the Earth. It was recorded on 27 April 1976 with Tom Baker and Elisabeth Sladen reprising their TV roles as the Doctor and Sarah Jane. Joining them was John Westbrook as Megron, High Lord of Chaos.

It was broadcast on 4 October 1976 on BBC Radio 4.