Synopsis - Dare you Descend into a man made hell on earth? By the gloom of electric lights, stunted and misshapen beasts scrabble for their lives in blasted landscapes of poisoned canals and grotesque vegetation. But his is no alien world. This is Earth or used to be. Now it is Tartarus, shut off from the face of heaven by a huge platform which completely envelops the world. Living in a technological utopia the inhabitants of the platform have long forgotten that other men still live in the grim underworld that they forsook. But one man descends to the Tartarean depths. He discovers that under the accelerated evolutionary conditions of this hothouse underworld a whole new ecology of grossly mutated life forms has emerged. Now the True Men share their environment with rat men, cat men and gigantic waterworms...