Nightfall had not brought Shalan ibn Mansour's riders swooping after the solitary wanderer, nor had dawn brought them. Again and again through the long, hot day, Gordon had halted on some rise and looked back, expecting to see the dust of the hurrying camels; but the desert had stretched empty to the horizon.
And now it seemed another miracle had taken place, for there were no signs of Hawkston and his caravan. Had they come and gone? They would have at least watered their camels at the pool; and from the utter lack of signs about it, Gordon knew that no one had camped or watered animals at the pool for many moons. No, it was indisputable, even if unexplainable. Something had delayed Hawkston and Gordon had reached the Caves ahead of him after all.
The American dropped on his belly at the pool and sank his face into the cool water. He lifted his head presently, shook it like a lion shaking his mane, and leisurely washed the dust from his face and hands.
Then he rose and went toward the cliff. He had seen no sign of life, yet he knew that in one of those caves lived the man he had come to seek. He lifted his voice in a far-carrying shout.
"Al Wazir! Ho there, Al Wazir!"
"Wazirrr!" whispered the echo back from the cliff. There was no other answer. The silence was ominous. With his rifle at the ready Gordon went toward the narrow trail that wound up the rugged face of the cliff. Up this he climbed, keenly scanning the eaves. They pitted the whole wall, in even tiers —too even to be the chance work of nature. They were man-made. Thousands of years ago, in the dim dawn of pre-history they had served as dwelling-places for some race of people who were not mere savages, who nitched their caverns in the soft strata with skill and cunning. Gordon knew the caves were connected by narrow passages, and that only by this ladder-like path he was following could they be reached from below.
The path ended at a long ledge, upon which all the caves of the lower tier opened. In the largest of these Al Wazir had taken up his abode.
Gordon called again, without result. He strode into the cave, and there he halted. It was square in shape. In the back wall and in each side wall showed a narrow door-like opening. Those at the sides led into adjoining caves. That at the back let into a smaller cavern, without any other outlet. There, Gordon remembered, Al Wazir had stored the dried and tinned foods he had brought with him. He had brought no furniture, nor weapons.
In one corner of the square cave a heap of charred fragments indicated that a fire had once been built there. In one corner lay a heap of skins —Al Wazir's bed. Nearby lay the one book Al Wazir had brought with him —The Bhagavat-Gita. But of the man himself there was no evidence.
Gordon went into the storeroom, struck a match and looked about him. The tins of food were there, though the supply was considerably depleted. But they were not stacked against the wall in neat columns as Gordon had seen them stowed under Al Wazir's directions. They were tumbled and scattered about all over the floor, with open and empty tins among them. This was not like Al Wazir, who placed a high value on neatness and order, even in small things. The rope he had brought along to aid him in exploring the caves lay coiled in one corner.
Gordon, extremely puzzled, returned to the square cave. Here, he had fully expected to find Al Wazir sitting in tranquil meditation, or out on the ledge meditating over the sun-set desert. Where was the man?
He was certain that Al Wazir had not wandered away to perish in the desert. There was no reason for him to leave the caves. If he had simply tired of his lonely life and taken his departure, he would have taken the book that was lying on the floor, his inseparable companion. There was no blood-stain on the floor, or anything to indicate that the hermit had met a violent end. Nor did Gordon believe that any Arab, even the Ruweila, would molest the "holy man." Anyway, if Arabs had done away with Al Wazir, they would have taken away the rope and the tins of food. And he was certain that, until Hawkston learned of it, no white man but himself had known of Al Wazir's whereabouts.
He searched through the lower tiers of caves without avail. The sun had sunk out of sight behind the hills, whose long shadows streamed far eastward across the desert, and deepening shadows filled the caverns. The silence and the mystery began to weigh on Gordon's nerves. He began to be irked by the feeling that unseen eyes were watching him. Men who live lives of constant peril develop certain obscure faculties or instincts to a keenness unknown to those lapped about by the securities of "civilization." As he passed through the caves, Gordon repeatedly felt an impulse to turn suddenly, to try to surprise those eyes that seemed to be boring into his back. At last he did wheel suddenly, thumb pressing back the hammer of his rifle, eyes alert for any movement in the growing dusk. The shadowy chambers and passages stood empty before him.
Once, as he passed a dark passageway he could have sworn he heard a soft noise, like the stealthy tread of a bare, furtive foot. He stepped to the mouth of the tunnel and called, without conviction: "Is that you, Ivan?" He shivered at the silence which followed; he had not really believed it was Al Wazir. He groped his way into the tunnel, rifle poked ahead of him. Within a few yards he encountered a blank wall; there seemed to be no entrance or exit except the doorway through which he had come. And the tunnel was empty, save for himself.
He returned to the ledge before the caves, in disgust.
"Hell, am I getting jumpy?"
But a grisly thought kept recurring to him—recollection of the Bedouins" belief that a supernatural fiend lurked in these ancient caves and devoured any human foolish enough to be caught there by night. This thought kept recurring, together with the reflection that the Orient held many secrets, which the West would laugh at, but which often proved to be grim realities. That would explain Al Wazir's mysterious absence: if some fiendish or bestial dweller in the caves had devoured him—Gordon's speculations revolved about a hypothetical rock-python of enormous size, dwelling for generations, perhaps centuries, in the hills—that would explain the lack of any blood-stains. Abruptly he swore: "Damn! I'm going batty. There are no snakes like that in Arabia. These caves are getting on my nerves."
It was a fact. There was a brooding weirdness about these ancient and forgotten caverns that roused uncanny speculations in Gordon's predominantly Celtic mind. What race had occupied them, so long ago? What wars had they witnessed, against what fierce barbarians sweeping up from the south? What cruelties and intrigues had they known, what grim rituals of worship and human sacrifice? Gordon shrugged his shoulders, wishing he had not thought of human sacrifice. The idea fitted too well with the general atmosphere of these grim caverns.
Angry at himself, he returned to the big square cavern, which, he remembered, the Arabs called Niss'rosh, The Eagle's Nest, for some reason or other. He meant to sleep in the caves that night, partly to overcome the aversion he felt toward them, partly because he did not care to be caught down on the plain in case Hawkston or Shalan ibn Mansour arrived in the night. There was another mystery. Why had not they reached the Caves, one or both of them? The desert was a breeding-place of mysteries, a twilight realm of fantasy. Al Wazir, Hawkston and Shalan ibn Mansour—had the fabled djinn of the Empty Abodes snatched them up and flown away with them, leaving him the one man alive in all the vast desert? Such whims of imagination played through his exhausted brain, as, too weary to eat, he prepared for the night.
He put a large rock in the trail, poised precariously, which anyone climbing the path in the dark would be sure to dislodge. The noise would awaken him. He stretched himself on the pile of skins, painfully aware of the stress and strain of his long trek, which had taxed even his iron frame to the utmost. He was asleep almost the instant he touched his rude bed.