Many people will probably judge us callous as well as mad for thinking about the northward tunnel and the abyss so soon after our somber discovery, and I am not prepared to say that we would have immediately revived such thoughts but for a specific circumstance which broke in upon us and set up a whole new train of speculations. We had replaced the tarpaulin over poor Gedney and were standing in a kind of mute bewilderment when the sounds finally reached our consciousness — the first sounds we had heard since descending out of the open where the mountain wind whined faintly from its unearthly heights. Well-known and mundane though they were, their presence in this remote world of death was more unexpected and unnerving than any grotesque or fabulous tones could possibly have been — since they gave a fresh upsetting to all our notions of cosmic harmony.
Had it been some trace of that bizarre musical piping over a wide range which Lake’s dissection report had led us to expect in those others — and which, indeed, our overwrought fancies had been reading into every wind howl we had heard since coming on the camp horror — it would have had a kind of hellish congruity with the aeon-dead region around us. A voice from other epochs belongs in a graveyard of other epochs. As it was, however, the noise shattered all our profoundly seated adjustments — all our tacit acceptance of the inner antarctic as a waste utterly and irrevocably void of every vestige of normal life. What we heard was not the fabulous note of any buried blasphemy of elder earth from whose supernal toughness an age-denied polar sun had evoked a monstrous response. Instead, it was a thing so mockingly normal and so unerringly familiarized by our sea days off Victoria Land and our camp days at McMurdo Sound that we shuddered to think of it here, where such things ought not to be. To be brief — it was simply the raucous squawking of a penguin.
The muffled sound floated from subglacial recesses nearly opposite to the corridor whence we had come — regions manifestly in the direction of that other tunnel to the vast abyss. The presence of a living water bird in such a direction — in a world whose surface was one of age-long and uniform lifelessness — could lead to only one conclusion; hence our first thought was to verify the objective reality of the sound. It was, indeed, repeated, and seemed at times to come from more than one throat. Seeking its source, we entered an archway from which much debris had been cleared; resuming our trail blazing — with an added paper supply taken with curious repugnance from one of the tarpaulin bundles on the sledges — when we left daylight behind.
As the glaciated floor gave place to a litter of detritus, we plainly discerned some curious, dragging tracks; and once Danforth found a distinct print of a sort whose description would be only too superfluous. The course indicated by the penguin cries was precisely what our map and compass prescribed as an approach to the more northerly tunnel mouth, and we were glad to find that a bridgeless thoroughfare on the ground and basement levels seemed open. The tunnel, according to the chart, ought to start from the basement of a large pyramidal structure which we seemed vaguely to recall from our aerial survey as remarkably well-preserved. Along our path the single torch showed a customary profusion of carvings, but we did not pause to examine any of these.
Suddenly a bulky white shape loomed up ahead of us, and we flashed on the second torch. It is odd how wholly this new quest had turned our minds from earlier fears of what might lurk near. Those other ones, having left their supplies in the great circular place, must have planned to return after their scouting trip toward or into the abyss; yet we had now discarded all caution concerning them as completely as if they had never existed. This white, waddling thing was fully six feet high, yet we seemed to realize at once that it was not one of those others. They were larger and dark, and, according to the sculptures, their motion over land surfaces was a swift, assured matter despite the queerness of their sea-born tentacle equipment. But to say that the white thing did not profoundly frighten us would be vain. We were indeed clutched for an instant by primitive dread almost sharper than the worst of our reasoned fears regarding those others. Then came a flash of anticlimax as the white shape sidled into a lateral archway to our left to join two others of its kind which had summoned it in raucous tones. For it was only a penguin — albeit of a huge, unknown species larger than the greatest of the known king penguins, and monstrous in its combined albinism and virtual eyelessness.
When we had followed the thing into the archway and turned both our torches on the indifferent and unheeding group of three, we saw that they were all eyeless albinos of the same unknown and gigantic species. Their size reminded us of some of the archaic penguins depicted in the Old Ones’ sculptures, and it did not take us long to conclude that they were descended from the same stock — undoubtedly surviving through a retreat to some warmer inner region whose perpetual blackness had destroyed their pigmentation and atrophied their eyes to mere useless slits. That their present habitat was the vast abyss we sought, was not for a moment to be doubted; and this evidence of the gulf’s continued warmth and habitability filled us with the most curious and subtly perturbing fancies.
We wondered, too, what had caused these three birds to venture out of their usual domain. The state and silence of the great dead city made it clear that it had at no time been an habitual seasonal rookery, whilst the manifest indifference of the trio to our presence made it seem odd that any passing party of those others should have startled them. Was it possible that those others had taken some aggressive action or tried to increase their meat supply? We doubted whether that pungent odor which the dogs had hated could cause an equal antipathy in these penguins, since their ancestors had obviously lived on excellent terms with the Old Ones — an amicable relationship which must have survived in the abyss below as long as any of the Old Ones remained. Regretting — in a flare-up of the old spirit of pure science — that we could not photograph these anomalous creatures, we shortly left them to their squawking and pushed on toward the abyss whose openness was now so positively proved to us, and whose exact direction occasional penguin tracks made clear.
Not long afterward a steep descent in a long, low, doorless, and peculiarly sculptureless corridor led us to believe that we were approaching the tunnel mouth at last. We had passed two more penguins, and heard others immediately ahead. Then the corridor ended in a prodigious open space which made us gasp involuntarily — a perfect inverted hemisphere, obviously deep underground; fully a hundred feet in diameter and fifty feet high, with low archways opening around all parts of the circumference but one, and that one yawning cavernously with a black, arched aperture which broke the symmetry of the vault to a height of nearly fifteen feet. It was the entrance to the great abyss.
In this vast hemisphere, whose concave roof was impressively though decadently carved to a likeness of the primordial celestial dome, a few albino penguins waddled — aliens there, but indifferent and unseeing. The black tunnel yawned indefinitely off at a steep, descending grade, its aperture adorned with grotesquely chiseled jambs and lintel. From that cryptical mouth we fancied a current of slightly warmer air, and perhaps even a suspicion of vapor proceeded; and we wondered what living entities other than ............