A monstrous digging machine penetrates at breakneck speed, cutting straight through the earth's core and into the pellucidar's twilight world. Dr. Perry and David Innes are confronted by half-human monsters, lizard-like birds, and man-eating plants once they arrive.
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A monstrous digging machine penetrates at breakneck speed, cutting straight through the earth's core and into the pellucidar's twilight world. Dr. Perry and David Innes are confronted by half-human monsters, lizard-like birds, and man-eating plants once they arrive.
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