As I lay there staring stupidly up at the rugged forms of tower and pinnacle surmounting this strange wall, I was struck with the appearance of dark spots in the face of the cliff near the summit, which had a peculiar regularity, as if they might be windows, cut or blasted out by human hands. This interested and set me to examining the place more carefully, when I became astounded at what I could no longer doubt was an artificial design extending along the top of the precipice. Could it be possible that this great natural wall was crowned with a castellated structure built by men, and so closely resembling the cliff itself as to be indistinguishable from it?
I raised my head and examined the place with growing curiosity. Yes, there could be no question about it, the whole top of the wall was built up artificially. Perhaps it was some great fortress, or decaying monastery; for the singular blending of art and nature made it seem as if the two had grown together through vast periods of time.
As I lay there, dreading the effort of rising, and indeed almost too weak to proceed, there came a strange sound through the air, which grew louder, and more inexplicable each minute. I listened, wondering if it could be in my own ears, as signal of approaching death, and almost wished it might be. Was it a rushing wind creeping down from the heights above, or the portent of subterranean upheaval? It grew, and while vaguely surmising the cause, I became suddenly aware of a fearful object, hovering above. I started to my feet, staggered and fell, for directly over me was one of those gigantic birds. It swooped earthward, and I crouched in horror, as I saw that it was making directly for me.
The end was at hand. I should be pecked to pieces before I was dead, and my flesh be consumed like carrion by this damnable, awe-inspiring monster. Even had I the strength to resist, a dozen men could not have coped with such a creature. I lay quietly waiting to feel that awful beak pecking at my heart, my eyes, my brains, and suffered the agony of a thousand deaths. Down it came; it was close above, and the stench upon the air was overpowering. I could not move, for the paralysis of a consuming fear devoured me. I looked straight up into those baleful eyes, and my attention was attracted by a strange thing, for around the bird's neck was suspended a gilded barrel of peculiar form. Now was I alive, or was I dead? for at that moment a sight presented itself which might well have made me doubt. When close above the ground, and within fifty feet, the bird stopped and by some dextrous movement of beak and claw, disengaged the barrel, which dropped quietly upon the ground, leaving the animal free to fly away as quietly and mysteriously as it had come. It disappeared among the rocks near the summit of the cliff.
Crawling toward the cask I examined it, and discovered to my unspeakable joy that it was divided into two compartments, in one of which was about five gallons of cold water, while in the other was a quantity of fruit. Had this strange creature been sent from heaven? but I could not stop to think until after I had drunk and eaten, and then falling down upon my knees thanked God for his deliverance, for even here in this awful desert I was watched and cared for.
I was a new man, but the thought of my brother dying in the air ship came upon me with renewed force. Could I ever hope to find him? The heights above offered the only chance of doing so, for there I could overlook the inequalities of the sand hills, discover his position, and with carefully established bearings reach the spot. It was a frightful undertaking, but my only hope.
Hanging the cask with its remains of food and water across my back by the cords attached, I again pushed forward, and after an hour's patient trudging was relieved to find the sand less tenacious, and far more shallow; in fact, the walking had become comparatively easy, but the climb had not commenced. When it did I discovered what appeared to be a natural rocky way leading above. Up this dangerous path I directed my steps, and although the work was steep and laborious, it was a relief to have solid ground once more beneath my feet.
At the end of two hours I had ascended to a great elevation, but to my amazement the air ship was not yet visible. The atmosphere over the plain was quivering with heat, and its dense gaseous condition may have obscured the vessel, but I was greatly distressed that it had not come in view. Another hour's climb and still the noble craft was hidden from my sight.
It was growing cooler, but neither watercourse nor vegetation had been encountered, yet the black, towering rocks closed in upon me on every side. Whither was the path leading, and what would be the end? It would be useless to return, to be lost in the drift. There was but one object to steer by, and but one hope to which I could cling, and that was the great barren rock that supported me. If once my back was turned upon this single landmark, there was absolutely nothing to look to. And so with aching heart, and the gravest misgivings, I struggled on, stopping constantly to search the plain below.
So far the path had been narrow and tortuous, a mere rut, twisting in and out among the irregularities of the wall, but suddenly I found myself standing upon a horizontal ledge, like a natural piazza overlooking the plain. On my right, at the back of this landing, the cliff continued to rise in a sheer ascent of perhaps a hundred feet, and here I again observed those dark openings, which I had seen from below. It was a remarkable formation, and I walked along it with an uncanny dread lest here was the abode of some unknown being which might resent my intrusion.