The Waziri had reached the outer end of the tunnel, and were winding upward toward the fresh air and the welcome starlight of the kopje's summit, before Tarzan shook off the detaining hand of reverie and started slowly after them.
Once again, and, he thought, for the last time, he closed the massive door of the treasure room. In the darkness behind him Werper rose and stretched his cramped muscles. He stretched forth a hand and lovingly caressed a golden ingot on the nearest tier.
He raised it from its immemorial resting place and weighed it in his hands. He clutched it to his bosom in an ecstasy of avarice.
Tarzan dreamed of the happy homecoming which lay before him, of dear arms about his neck, and a soft cheek pressed to his; but there rose to dispel that dream the memory of the old witch-doctor and his warning.
And then, in the span of a few brief seconds, the hopes of both these men were shattered. The one forgot even his greed in the panic of terror—the other was plunged into total forgetfulness of the past by a jagged fragment of rock which gashed a deep cut upon his head.
5
The Altar of the Flaming God
It was at the moment that Tarzan turned from the closed door to pursue his way to the outer world. The thing came without warning. One instant all was quiet and stability—the next, and the world rocked, the tortured sides of the narrow passageway split and crumbled, great blocks of granite, dislodged from the ceiling, tumbled into the narrow way, choking it, and the walls bent inward upon the wreckage. Beneath the blow of a fragment of the roof, Tarzan staggered back against the door to the treasure room, his weight pushed it open and his body rolled inward upon the floor.
In the great apartment where the treasure lay less damage was wrought by the earthquake. A few ingots toppled from the higher tiers, a single piece of the rocky ceiling splintered off and crashed downward to the floor, and the walls cracked, though they did not collapse.
There was but the single shock, no other followed to complete the damage undertaken by the first. Werper, thrown to his length by the suddenness and violence of the disturbance, staggered to his feet when he found himself unhurt. Groping his way toward the far end of the chamber, he sought the candle which Tarzan had left stuck in its own wax upon the protruding end of an ingot.
By striking numerous matches the Belgian at last found what he sought, and when, a moment later, the sickly rays relieved the Stygian darkness about him, he breathed a nervous sigh of relief, for the impenetrable gloom had accentuated the terrors of his situation.
As they became accustomed to the light the man turned his eyes toward the door—his one thought now was of escape from this frightful tomb—and as he did so he saw the body of the naked giant lying stretched upon the floor just within the doorway. Werper drew back in sudden fear of detection; but a second glance convinced him that the Englishman was dead. From a great gash in the man's head a pool of blood had collected upon the concrete floor.
Quickly, the Belgian leaped over the prostrate form of his erstwhile host, and without a thought of succor for the man in whom, for aught he knew, life still remained, he bolted for the passageway and safety.
But his renewed hopes were soon dashed. Just beyond the doorway he found the passage completely clogged and choked by impenetrable masses of shattered rock.
Once more he turned and re-entered the treasure vault.
Taking the candle from its place he commenced a systematic search of the apartment, nor had he gone far before he discovered another door in the opposite end of the room, a door which gave upon creaking hinges to the weight of his body. Beyond the door lay another narrow passageway. Along this Werper made his way, ascending a flight of stone steps to another corridor twenty feet above the level of the first. The flickering candle lighted the way before him, and a moment later he was thankful for the possession of this crude and antiquated luminant, which, a few hours before he might have looked upon with contempt, for it showed him, just in time, a yawning pit, apparently terminating the tunnel he was traversing.
Before him was a circular shaft. He held the candle above it and peered downward. Below him, at a great distance, he saw the light reflected back from the surface of a pool of water. He had come upon a well.
He raised the candle above his head and peered across the black void, and there upon the opposite side he saw the continuation of the tunnel; but how was he to span the gulf?
As he stood there measuring the distance to the opposite side and wondering if he dared venture so great a leap, there broke suddenly upon his startled ears a piercing scream which diminished gradually until it ended in a series of dismal moans. The voice seemed partly human, yet so hideous that it might well have emanated from the tortured throat of a lost soul, writhing in the fires of hell.
The Belgian shuddered and looked fearfully upward, for the scream had seemed to come from above him.
As he looked he saw an opening far overhead, and a patch of sky pinked with brilliant stars.
His half-formed intention to call for help was expunged by the terrifying cry—where such a voice lived, no human creatures could dwell. He dared not reveal himself to whatever inhabitants dwelt in the place above him. He cursed himself for a fool that he had ever embarked upon such a mission. He wished himself safely back in the camp of Achmet Zek, and would almost have embraced an opportunity to give himself up to the military authorities of the Congo if by so doing he might be rescued from the frightful predicament in which he now was.
He listened fearfully, but the cry was not repeated, and at last spurred to desperate means, he gathered himself for the leap across the chasm. Going back twenty paces, he took a running start, and at the edge of the well, leaped upward and outward in an attempt to gain the opposite side.
In his hand he clutched the sputtering candle, and as he took the leap the rush of air extinguished it.
In utter darkness he flew through space, clutching outward for a hold should his feet miss the invisible ledge.
He struck the edge of the door of the opposite terminus of the rocky tunnel with his knees, slipped backward, clutched desperately for a moment, and at last hung half within and half without the opening; but he was safe.
For several minutes he dared not move; but clung, weak and sweating, where he lay. At last, cautiously, he drew himself well within the tunnel, and again he lay at full length upon the floor, fighting to regain control of his shattered nerves.
When his knees struck the edge of the tunnel he had dropped the candle. Presently, hoping against hope that it had fallen upon the floor of the passageway, rather than back into the depths of the well, he rose upon all fours and commenced a diligent search for the little tallow cylinder, which now seemed infinitely more precious to him than all the fabulous wealth of the hoarded ingots of Opar.
And when, at last, he found it, he clasped it to him and sank back sobbing and exhausted. For many minutes he lay trembling and broken; but finally he drew himself to a sitting posture, and taking a match from his pocket, lighted the stump of the candle which remained to him. With the light he found it easier to regain control of his nerves, and presently he was again making his way along the tunnel in search of an avenue of escape. The horrid cry that had come down to him from above through the ancient well-shaft still haunted him, so that he trembled in terror at even the sounds of his own cautious advance.
He had gone forward but a short distance, when, to his chagrin, a wall of masonry barred his farther progress, closing the tunnel completely from top to bottom and from side to side. What could it mean? Werper was an educated and intelligent man. His military training had taught him to use his mind for the purpose for which it was intended. A blind tunnel such as this was senseless. It must continue beyond the wall. Someone, at some time in the past, had had it blocked for an unknown purpose of his own. The man fell to examining the masonry by the light of his candle. To his delight he discovered that the thin blocks of hewn stone of which it was constructed were fitted in loosely without mortar or cement. He tugged upon one of them, and to his joy found that it was easily removable. One after another he pulled out the blocks until he had opened an aperture large enough to admit his body, then he crawled through into a large, low chamber. Across this another door barred his way; but this, too, gave before his efforts, for it was not barred. A long, dark corridor showed before him, but before he had followed it
