I saw only the bare rounded sides of a small shaftlike tunnel and I laughed nervously. My imagination was running riot; I could have sworn that hideous yellow eyes glared terribly at me from the darkness, and that a crawling something had scuttered away down the tunnel. I was foolish to let these imaginings upset me. The Children had long vanished from these caverns; a nameless and abhorrent race closer to the serpent than the man, they had centuries ago faded back into the oblivion from which they had crawled in the black dawn ages of the Earth.
I came out of the shaft into the winding corridor, which, as I remembered of old, was lighter. Here from the shadows a lurking thing had leaped on my back while my companions ran on, unknowing. What a brute of a man Conan had been, to keep going after receiving such savage wounds! Aye, in that age all men were iron.
I came to the place where the tunnel forked and as before I took the left- hand branch and came to the shaft that led down. Down this I went, listening for the roar of the river, but not hearing it. Again the darkness shut in about the shaft, so I was forced to have recourse to my electric torch again, lest I lose my footing and plunge to my death. Oh, I, John O'Brien, am not nearly so sure-footed as was I, Conan the reaver; no, nor as tigerishly powerful and quick, either.
I soon struck the dank lower level and felt again the dampness that denoted my position under the riverbed, but still I could not hear the rush of the water. And indeed I knew that whatever mighty river had rushed roaring to the sea in those ancient times, there was no such body of water among the hills today. I halted, flashing my light about. I was in a vast tunnel, not very high of roof, but broad. Other smaller tunnels branched off from it and I wondered at the network which apparently honeycombed the hills.
I cannot describe the grim, gloomy effect of those dark, low-roofed corridors far below the earth. Over all hung an overpowering sense of unspeakable antiquity. Why had the little people carved out these mysterious crypts, and in which black age? Were these caverns their last refuge from the onrushing tides of humanity, or their castles since time immemorial? I shook my head in bewilderment; the bestiality of the Children I had seen, yet somehow they had been able to carve these tunnels and chambers that might balk modern engineers. Even supposing they had but completed a task begun by nature, still it was a stupendous work for a race of dwarfish aborigines.
Then I realized with a start that I was spending more time in these gloomy tunnels than I cared for, and began to hunt for the steps by which Conan had ascended. I found them and, following them up, breathed again deeply in relief as the sudden glow of daylight filled the shaft. I came out upon the ledge, now worn away until it was little more than a bump on the face of the cliff. And I saw the great river, which had roared like a prisoned monster between the sheer walls of its narrow canyon, had dwindled away with the passing eons until it was no more than a tiny stream, far beneath me, trickling soundlessly among the stones on its way to the sea.
Aye, the surface of the earth changes; the rivers swell or shrink, the mountains heave and topple, the lakes dry up, the continents alter; but under the earth the work of lost, mysterious hands slumbers untouched by the sweep of Time. Their work, aye, but what of the hands that reared that work? Did they, too, lurk beneath the bosoms of the hills?
How long I stood there, lost in dim speculations, I do not know, but suddenly, glancing across at the other ledge, crumbling and weathered, I shrank back into the entrance behind me. Two figures came out upon the ledge and I gasped to see that they were Richard Brent and Eleanor Bland. Now I remembered why I had come to the cavern and my hand instinctively sought the revolver in my pocket. They did not see me. But I could see them, and hear them plainly, too, since no roaring river now thundered between the ledges.
"By gad, Eleanor," Brent was saying, "I'm glad you decided to come with me. Who would have guessed there was anything to those old tales about hidden tunnels leading from the cavern? I wonder how that section of wall came to collapse? I thought I heard a crash just as we entered the outer cave. Do you suppose some beggar was in the cavern ahead of us, and broke it in?"
"I don't know," she answered. "I remember—oh, I don't know. It almost seems as if I'd been here before, or dreamed I had. I seem to faintly remember, like a far-off nightmare, running, running, running endlessly through these dark corridors with hideous creatures on my heels..."
"Was I there?" jokingly asked Brent.
"Yes, and John, too," she answered. "But you were not Richard Brent, and John was not John O'Brien. No, and I was not Eleanor Bland, either. Oh, it's so dim and far-off I can't describe it at all. It's hazy and misty and terrible."