gasoline scent, we were again faintly conscious—spasmodically—of that more hideous and more persistent scent. After the way had branched from our former course, we sometimes gave the rays of our single torch a furtive sweep along the walls; noting in almost every case the well-nigh omnipresent sculptures, which indeed seem to have formed a main aesthetic outlet for the Old Ones.
About nine thirty p.m. , while traversing a vaulted corridor whose increasingly glaciated floor seemed somewhat below the ground level and whose roof grew lower as we advanced, we began to see strong daylight ahead and were able to turn off our torch. It appeared that we were coming to the vast, circular place, and that our distance from the upper air could not be very great.
The corridor ended in an arch, surprisingly low for these megalithic ruins, but we could see much through it even before we emerged. Beyond, there stretched a prodigious round space—fully two hundred feet in diameter—strewn with debris and containing many choked archways corresponding to the one we were about to cross. The walls were—in available spaces—boldly sculptured into a spiral band of heroic proportions; and displayed, despite the destructive weathering caused by the openness of the spot, an artistic splendor far beyond anything we had encountered before. The littered floor was quite heavily glaciated, and we fancied that the true bottom lay at a considerably lower depth.
But the salient object of the place was the titanic stone ramp which, eluding the archways by a sharp turn outward into the open floor, wound spirally up the stupendous cylindrical wall like an inside counterpart of those once climbing outside the monstrous towers or ziggurats of antique Babylon. Only the rapidity of our flight, and the perspective which confounded the descent with the tower’s inner wall, had prevented our noticing this feature from the air, and thus caused us to seek another avenue to the subglacial level.