from the buried treasure the preceding day. They had not gone far before Owaza discovered the fresh spoor of the Waziri.
'Many men passed here late yesterday,' he said to Esteban, eyeing the Spaniard quizzically.
'I saw nothing of them,' replied the latter. 'They must have come this way after I passed.'
'They came almost to our camp, and then they turned about and went away again,' said Owaza. 'Listen, Bwana, I carry a rifle and you shall march ahead of me. If these tracks were made by your people, and you are leading me into ambush, you shall be the first to die.'
'Listen, Owaza,' said Esteban, 'we are far enough from camp now so that I may tell you all. These tracks were made by the Waziri of Tarzan of the Apes, who buried the gold for me a day's march from here. I have sent them home, and I wish you to go back with me and move the gold to another hiding place. After these others have gotten their ivory and returned to England , you and I will come back and get the gold, and then, indeed, shall you be well rewarded.'
'Who are you, then?' asked Owaza. 'Often have I doubted that you are Tarzan of the Apes. The day that we left the camp outside of Opar one of my men told me that you had been poisoned by your own people and left in the camp. He said that he saw it with his own eyes—your body lying hidden behind some bushes—and yet you were with us upon the march that day. I thought that he lied to me, but I saw the consternation in his face when he saw you, and so I have often wondered if there were two Tarzans of the Apes.'
'I am not Tarzan of the Apes,' said Esteban. 'It was Tarzan of the Apes who was poisoned in our camp by the others. But they only gave him something that would put him to sleep for a long time, possibly with the hope that he would be killed by wild animals before he awoke. Whether or not he stilt lives we do not know. Therefore you have nothing to fear from the Waziri or Tarzan on my account, Owaza, for I want to keep out of their way even more than you.'
The black nodded. 'Perhaps you speak the truth,' he said, but still he walked behind, with his rifle always ready in his hand.
They went warily, for fear of overtaking the Waziri, but shortly after passing the spot where the latter had camped they saw that they had taken another route and that there was now no danger of coming in contact with them.
When they had reached a point within about a mile of the spot where the gold had been buried, Esteban told Owaza to have his boys remain there while they went ahead alone to effect the transfer of the ingots.
'The fewer who know of this,' he said to the black, 'the safer we shall be.'
'The Bwana speaks words of wisdom,' replied the wily black.
Esteban found the spot near the waterfall without difficulty, and upon questioning Owaza he discovered that the latter knew the location perfectly, and would have no difficulty in coming directly to it again from the coast. They transferred the gold but a short distance, concealing it in a heavy thicket near the edge of the river, knowing that it would be as safe from discovery there as though they had transported it a hundred miles, for the chances were extremely slight that the Waziri or anyone else who should learn of its original hiding place would imagine that anyone would go to the trouble of removing it but a matter of a hundred yards.
When they had finished Owaza looked at the sun.
'We will never reach camp tonight,' he said, 'and we will have to travel fast to overtake them even tomorrow.'
'I did not expect to,' replied Esteban, 'but I could not tell them that. If we never find them again I shall be satisfied.' Owaza grinned. In his crafty mind an idea was formed.
'Why,' he thought, 'risk death in a battle with the Arab ivory raiders on the chance of securing a few tusks, when all this gold awaits only transportation to the coast to be ours?'
CHAPTER XIII
A STRANGE, FLAT TOWER
Tarzan, turning, discovered the man standing behind him on the top level of the ivy covered east tower of the Palace of Diamonds . His knife leaped from its sheath at the touch of his quick fingers. But almost simultaneously his hand dropped to his side, and he stood contemplating the other, with an expression of incredulity upon his face that but reflected a similar emotion registered upon the countenance of the stranger. For what Tarzan saw was no Bolgani, nor a Gomangani, but a white man, bald and old and shriveled, with a long, white beard—a white man, naked but for barbaric ornaments of gold spangles and diamonds.
'God!' exclaimed the strange apparition.
Tarzan eyed the other quizzically. That single English word opened up such tremendous possibilities for conjecture as baffled the mind of the ape-man.
'What are you? Who are you?' continued the old man, but this time in the dialect of the great apes.
'You used an English word a moment ago,' said Tarzan. 'Do you speak that language?' Tarzan himself spoke in English.
'Ah, dear God!' cried the old man, 'that I should have lived to hear that sweet tongue again.' And he, too, now spoke in English, halting English, as might one who was long unaccustomed to voicing the language.
'Who are you?' asked Tarzan, 'and what are you doing here?'
'It is the same question that I asked you,' replied the old man. 'Do not be afraid to answer me. You are evidently an Englishman, and you have nothing to fear from me.'
'I am here after a woman, captured by the Bolgani,' replied Tarzan.
The other nodded. 'Yes,' he said, 'I know. She is here.'
'Is she safe?' asked Tarzan.
'She has not been harmed. She will be safe until tomorrow or the next day,' replied the old man. 'But who are you, and how did you find your way here from the outer world?'
'I am Tarzan of the Apes,' replied the ape-man. 'I came into this valley looking for a way out of the valley of Opar where the life of my companion was in danger. And you?'
'I am an old man,' replied the other, 'and I have been here ever since I was a boy. I was a stowaway on the ship that brought Stanley to Africa after the establishment of the station on Stanley Pool , and I came into the interior with him. I went out from camp to hunt, alone, one day. I lost my way and later was captured by unfriendly natives. They took me farther into the interior to their village from which I finally escaped, but so utterly confused and lost that I had no idea what direction to take to find a trail to the coast. I wandered thus for months, until finally, upon an accursed day I found an entrance to this valley. I do not know why they did not put me to death at once, but they did not, and later they discovered that my knowledge could be turned to advantage to them. Since then I have helped them in their quarrying and mining and in their diamond cutting. I have given them iron drills with hardened points and drills tipped with diamonds. Now I am practically one of them, but always in my heart has been the hope that some day I might escape from the valley—a hopeless hope, though, I may assure you.'
'There is no way out?' asked Tarzan.
'There is a way, but it is always guarded.'
'Where is it?' queried Tarzan.
'It is a continuation of one of the mine tunnels, passing entirely through the mountain to the valley beyond. The mines have been worked by the ancestors of this race for an almost incalculable length of time. The mountains are honeycombed with their shafts and tunnels. Back of the gold-bearing quartz lies an enormous deposit of altered peridotite, which contains diamonds, in the search for which it evidently became necessary to extend one of the shafts to the opposite side of the mountain, possibly for purposes of ventilation. This tunnel and the trail leading down into Opar are the only means of ingress to the valley. From time immemorial they have kept the tunnel guarded, more particularly, I imagine, to prevent the escape of slaves than to thwart the inroads of an enemy, since they believe that there is no fear of the latter emergency. The trail to Opar they do not guard, because they no longer fear the Oparians, and know quite well that none of their Gomangani slaves would dare enter the valley of the sunworshipers. For the same reason, then, that the slaves cannot escape, we, too, must remain prisoners here forever.'
'How is the tunnel guarded?' asked Tarzan.
