starring Doug McClure, Peter Cushing, and Caroline Munro
When their giant burrowing machine hurtles out of control, Dr Perry and his American backer, David Innes , discover a terrifying pre-historic world enclosed in a vast subterranean cave. Captured by a tribe of half-human creatures, the two explorers survive a series of hair-raising adventures until they come to grips with the real rulers of the world - the grisly Mahars
Contributors
Screenplay By: Milton Subotsky
Based on the novel By: Edgar Rice Burroughs
Produced By: John Dark
Directed By: Kevin Connor.
David Innes: Doug McClure
Dr Abner Perry: Peter Cushing
Dia: Caroline Munro
R a: Cy Grant
Ghak: Godfrey James
Hooja: Sean Lynch
Jubal: Michael Crane
Sagoth chief: Bobby Parr
Dowsett: Keith Barron
Maisie: Helen Gill
Gadsby: Anthony Verner