To form even a rudimentary idea of our thoughts and feelings as we penetrated this æon-silent maze of unhuman masonry one must correlate a hopelessly bewildering chaos of fugitive moods, memories, and impressions. The sheer appalling antiquity and lethal desolation of the place were enough to overwhelm almost any sensitive person, but added to these elements were the recent unexplained horror at the camp, and the revelations all too soon effected by the terrible mural sculptures around us.
The moment we came upon a perfect section of carving, where no ambiguity of interpretation could exist, it took only a brief study to give us the hideous truth—a truth which it would be naïve to claim Danforth and I had not independently suspected before, though we had carefully refrained from even hinting it to each other. There could now be no further merciful doubt about the nature of the beings which had built and inhabited this monstrous dead city millions of years ago, when man's ancestors were primitive archaic mammals, and vast Dinosauria roamed the tropical steppes of Europe and Asia.
We had previously clung to a desperate alternative and insisted—each to himself—that the omnipresence of the five-pointed motif meant only some cultural or religious exaltation of the archæan natural object which had so patently embodied the quality of five-pointedness; as the decorative motifs of Minoan Crete exalted the sacred bull, those of Egypt the scarabæus, those of Rome the wolf and the eagle, and those of various savage tribes some chosen totem animal.
But this lone refuge was now stripped from us, and we were forced to face definitely the reason-shaking realization which the reader of these pages has doubtless long ago anticipated. I can scarcely bear to write it down in black and white even now, but perhaps that will not be necessary.
The things once rearing and dwelling in this frightful masonry in the age of Dinosauria were not indeed Dinosauria, but far worse. Mere Dinosauria were new and almost brainless objects—but the builders of the city were wise and old, and had left certain traces in rocks even then laid down well nigh a thousand million years—rocks laid down before the true life of earth had advanced beyond plastic groups of cells—rocks laid down before the true life of earth had existed at all.
They were the makers and enslavers of that life, and above all doubt the originals of the fiendish elder myths which things like the Pnakotic Manuscripts and the Necronomicon affrightedly hint about. They were the great "Old Ones" that had filtered down from the stars when earth was young—the beings whose substance an alien evolution had shaped, and whose powers were such as this planet had never bred. And to think that only the day before Danforth and I had actually looked upon fragments of their millennially fossilized substance—and that poor Lake and his party had seen their complete outlines——
It is, of course, impossible for me to relate in proper order the stages by which we picked up what we know of that monstrous chapter of prehuman life. After the first shock of the certain revelation, we had to pause a while to recuperate, and it was fully three o'clock before we got started on our actual tour of systematic research.
The sculptures in the building we entered were of relatively late date—perhaps two million years ago—as checked up by geological, biological, and astronomical features—and embodied an art which would be called decadent in comparison with that of specimens we found in older buildings, after crossing bridges under the glacial sheet.
One edifice hewn from the solid rock seemed to go back forty or possibly even fifty million years—to the lower Eocene or upper Cretaceous—and contained bas-reliefs of an artistry surpassing anything else, with one tremendous exception, that we encountered. That was, we have since agreed, the oldest domestic structure we traversed.