Yet long before we had passed the great star-shaped ruin and reached our plane our fears had become transferred to the lesser but vast enough range whose re-crossing lay ahead of us. From these foothills the black, ruin-crusted slopes reared up starkly and hideously against the east, again reminding us of those strange Asian paintings of Nicholas Roerich; and when we thought of the damnable honeycombs inside them, and of the frightful amorphous entities that might have pushed their foetidly squirming way even to the topmost hollow pinnacles, we could not face without panic the prospect of again sailing by those suggestive skyward cave-mouths where the wind made sounds like an evil musical piping over a wide range. To make matters worse, we saw distinct traces of local mist around several of the summits—as poor Lake must have done when he made that early mistake about volcanism—and thought shiveringly of that kindred mist from which we had just escaped; of that, and of the blasphemous, horror-fostering abyss whence all such vapours came.
All was well with the plane, and we clumsily hauled on our heavy flying furs. Danforth got the engine started without trouble, and we made a very smooth takeoff over the nightmare city. Below us the primal Cyclopean masonry spread out as it had done when first we saw it—so short, yet infinitely long, a time ago—and we began rising and turning to test the wind for our crossing through the pass. At a very high level there must have been great disturbance, since the ice-dust clouds of the zenith were doing all sorts of fantastic things; but at 24,000 feet, the height we needed for the pass, we found navigation quite practicable. As we drew close to the jutting peaks the wind’s strange piping again became manifest, and I could see Danforth’s hands trembling at the controls. Rank amateur though I was, I thought at that moment that I might be a better navigator than he in effecting the dangerous crossing between pinnacles; and when I made motions to change seats and take over his duties he did not protest. I tried to keep all my skill and self-possession about me, and stared at the sector of reddish farther sky betwixt the walls of the pass—resolutely refusing to pay attention to the puffs of mountain-top vapour, and wishing that I had wax-stopped ears like Ulysses’ men off the Sirens’ coast to keep that disturbing wind-piping from my consciousness.
But Danforth, released from his piloting and keyed up to a dangerous nervous pitch, could not keep quiet. I felt him turning and wriggling about as he looked back at the terrible receding city, ahead at the cave-riddled, cube-barnacled peaks, sidewise at the bleak sea of snowy, rampart-strown foothills, and upward at the seething, grotesquely clouded sky. It was then, just as I was trying to steer safely through the pass, that his mad shrieking brought us so close to disaster by shattering my tight hold on myself and causing me to fumble helplessly with the controls for a moment. A second afterward my resolution triumphed and we made the crossing safely—yet I am afraid that Danforth will never be the same again.
I have said that Danforth refused to tell me what final horror made him scream out so insanely—a horror which, I feel sadly sure, is mainly responsible for his present breakdown. We had snatches of shouted conversation above the wind’s piping and the engine’s buzzing as we reached the safe side of the range and swooped slowly down toward the camp, but that had mostly to do with the pledges of secrecy we had made as we prepared to leave the nightmare city. Certain things, we had agreed, were not for people to know and discuss lightly—and I would not speak of them now but for the need of heading off that Starkweather-Moore Expedition, and others, at any cost. It is absolutely necessary, for the peace and safety of mankind, that some of earth’s dark, dead corners and unplumbed depths be let alone; lest sleeping abnormalities wake to resurgent life, and blasphemously surviving nightmares squirm and splash out of their black lairs to newer and wider conquests.
All that Danforth has ever hinted is that the final horror was a mirage. It was not, he declares, anything connected with the cubes and caves of echoing, vaporous, wormily honeycombed mountains of madness which we crossed; but a single fantastic, daemoniac glimpse, among the churning zenith-clouds, of what lay back of those other violet westward mountains which the Old Ones had shunned and feared. It is very probable that the thing was a sheer delusion born of the previous stresses we had passed through, and of the actual though unrecognised mirage of the dead transmontane city experienced near Lake’s camp the day before; but it was so real to Danforth that he suffers from it still.