base on a edgar rice burroughs novel and at the earth core provide little more than mean to escape and give your brain a rest . a victorian scientist dr. abner perry ( peter cushing ) invent a giant burrowing machine and which he and his american partner ( doug mcclure ) use to corkscrew their way deep into the earth to explore what mysteries it may hold . they soon discover a lost world of subhuman creature have conflict with prehistoric monster . cushing come across a an absent mind professor to the point of be annoy . instead of be a bold adventurer and he come across effeminate . on the other hand mcclure overact enough to make himself also laughable . caroline munro play the pretty princess dia that refuse to leave her world near the center of the earth . also in the cast be represent godfrey james and cy grant and michael crane .