Dismal hokum about a group of geologists who find themselves trapped in a cave by a rockfall. One of them has the bright idea of surviving by eating one anothers' limbs. Of course, no sooner have they amputated the first limb than they are rescued. Years later, the guy goes on the rampage... or does he? The trouble is that the film is directed with a total lack of conviction that has to be seen to be believed, and the script is riddled with lines indicative of desperation ('Gee, he has to show himself soon', or 'What do we do now?'). Someone has evidently added a professionally-shot final sequence in an attempt to save the day. They needn't have bothered.