From the cover of the Signet paperback by Joseph L. Gilmore: "A novel of relentless flesh-creeping horror! The Fangs of Terror! In a vast underground labyrinth a swelling army of ravenous rattlers moved effortlessly through a network of smooth channels that riddled a mountaintop retreat. They slithered to the top by the thousands, uncoiling, writhing, eyes unblinking, fangs exposed, tongues flickering eagerly....On the sunlit surface, a great California luxury resort was being completed, a flood of wealthy and famous guests was about to pour in to make this wilderness mountain their private preserve....There was no way that anyone could know they were holidaying above the dens of a seething mass of rattlesnakes. And there was no way anyone could escape the fiendish hissing horror, or the nighmare struggle that would erupt..."