The Art of Destruction
Stephen Cole
 The TARDIS arrives in 22nd century Africa, where agri-teams are growing food in the rich soil around a dormant volcano to feed the hungry millions of Earth. However, the time travellers detect an alien signal nearby. As something moves in the volcanic tunnels, the Doctor realises an ancient trap has been triggered. The Doctor and Rose meet Solomon Nabarr and Basel who explain that the Time travellers have just landed right by Mount Tarsus in Chad.