Before us was open space--an abyss in the body of the Metal Monster.
The corridor opened into it like a window.

Thrusting out our heads, we saw an unbroken wall both above and below.

Half a mile away was its opposite side.

Over this pit was a misty sky and not more than a thousand feet above and black against the heavens was the lip of it--the cornices of this chasm within the City.
Far, far beneath us we watched the Hordes throw themselves across the abyss in webs of curving arches and girder-straight bridges; gigantic we knew these spans must be yet dwarfed to slender footways by distance.

Over them moved hurrying companies; from them came flashings, glitterings--prismatic, sun golden; plutonic scarlets, molten blues; javelins of colored light piercing upward from unfolded cubes and globes and pyramids crossing them or from busy bearers of the shining fruits of the mysterious workshops.
And as they passed the bridges swung up, coiled and thrust themselves from sight through openings that closed behind them.