Harmless, enjoyable fodder based on the Edgar Rice Burroughs vision of a habitable Hollow Earth that exists beneath our feet. Peter Cushing and Doug McClure are two adventurers who employ an earth burrowing contraption that propels them deep within the earth to discover a region previously unknown that is full of life! In addition to people, there are any number of monstrous dinosaurs and ultra vibrant alien fauna. McClure provides the brawn and Cushing the brains as they must work in tandem to free an oppressed race and find a way to get back alive to the surface of the planet.

Interesting set work and swashbuckling thrills are complimented with a large amount of special effects which in many cases are men in monster costumes barreling around the set pieces. A bit of a juvenile film exercise but never fear! McClure and Caroline Munro provide ample set decorations for the adults in attendance!

See also “The Land That Time Forgot”, and “The People That Time Forgot”, both also featuring McClure and a myriad number of beasties and extinct nasties.