They began to come upon chains and packsaddles, singletrees, dead mules, wagons. Saddletrees eaten bare of their rawhide coverings and weathered white as bone, a light chamfering of miceteeth along the edges of the wood. They rode through a region where iron will not rust nor tin tarnish. The ribbed frames of dead cattle under their patches of dried hide lay like the ruins of primitive boats upturned upon that shoreless void and they passed lurid and austere the black and desiccated shapes of horses and mules that travelers had stood afoot.