Jon Pertwee stars as the Doctor in the original soundtrack of this classic 1970 TV adventure, with linking narration by Caroline John. On Wenley Moor in Derbyshire, a nuclear energy research centre is suffering mysterious power losses and a series of staff breakdowns. What the Doctor discovers is quite unexpected: the power losses are being caused by a group of intelligent, indigenous reptiles living in caves deep beneath the moor. These are creatures who ruled Earth before Man, and they have lain dormant for centuries. Now awoken, they still believe Earth to be their planet!
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