The trail showed that Gorulga and his henchemen had gone through that door. But Conan hesitated. To wait until they emerged would probably mean to see the door locked in his face, and he might not be able to solve the mystery of its unlocking. On the other hand, if he followed them in, they might emerge and lock him in the cavern.
Throwing caution to the winds, he glided through the great portal. Somewhere in the cavern were the priests, the Teeth of Gwahlur, and perhaps a clue to the fate of Muriela. Personal risks had never yet deterred him from any purpose.
Moonlight illumined, for a few yards, the wide tunnel in which he found himself. Somewhere ahead of him he saw a faint glow and heard the echo of a weird chanting. The priests were not so far ahead of him as he had thought. The tunnel debouched into a wide room before the moonlight played out, an empty cavern of no great dimensions, but with a lofty, vaulted roof, glowing with a phosphorescent encrustation, which, as Conan knew, was a common phenomenon in that part of the world. It made a ghostly half-light, in which he was able to see a bestial image squatting on a shrine, and the black mouths of six or seven tunnels leading off from the chamber. Down the widest of these — the one directly behind the squat image which looked toward the outer opening — he caught the gleam of torches wavering, whereas the phosphorescent glow was fixed, and heard the chanting increase in volume.
Down it he went recklessly, and was presently peering into a larger cavern than the one he had just left. There was no phosphorus here, but the light of the torches fell on a larger altar and a more obscene and repulsive god squatting toad-like upon it. Before this repugnant deity Gorulga and his ten acolytes knelt and beat their heads upon the ground, while chanting monotonously. Conan realized why their progress had been so slow. Evidently approaching the secret crypt of the Teeth was a complicated and elaborate ritual.
He was fidgeting in nervous impatience before the chanting and bowing were over, but presently they rose and passed into the tunnel which opened behind the idol. Their torches bobbed away into the nighted vault, and he followed swiftly. Not much danger of being discovered. He glided along the shadows like a creature of the night, and the black priests were completely engrossed in their ceremonial mummery. Apparently they had not even noticed the absence of Gwarunga.
Emerging into a cavern of huge proportions, about whose upward curving walls gallery-like ledges marched in tiers, they began their worship anew before an altar which was larger, and a god which was more disgusting, than any encountered thus far.
Conan crouched in the black mouth of the tunnel, staring at the walls reflecting the lurid glow of the torches. He saw a carven stone stair winding up from tier to tier of the galleries; the roof was lost in darkness.
He started violently and the chanting broke off as the kneeling blacks flung up their heads. An inhuman voice boomed out high above them. They froze on their knees, their faces turned upward with a ghastly blue hue in the sudden glare of a weird light that burst blindingly up near the lofty roof and then burned with a throbbing glow. That glare lighted a gallery and a cry went up from the high priest, echoed shudderingly by his acolytes. In the flash there had been briefly disclosed to them a slim white figure standing upright in a sheen of silk and a glint of jewel-crusted gold. Then the blaze smoldered to a throbbing, pulsing luminosity in which nothing was distinct, and that slim shape was but a shimmering blur of ivory.
"Yelaya! " screamed Gorulga, his brown features ashen. "Why have you followed us? What is your pleasure?"
That weird unhuman voice rolled down from the roof, reechoing under that arching vault that magnified and altered it beyond recognition.
"Woe to the unbelievers! Woe to the false children of Keshia! Doom to them which deny their deity!"
A cry of horror went up from the priests. Gorulga looked like a shocked vulture in the glare of the torches.
"I do not understand!" he stammered. "We are faithful. In the chamber of the oracle you told us — "
"Do not heed what you heard in the chamber of the oracle!" rolled that terrible voice, multiplied until it was as though a myriad voices thundered and muttered the same warning. "Beware of false prophets and false gods! A demon in my guise spoke to you in the palace, giving false prophecy. Now harken and obey, for only I am the true goddess, and I give you one chance to save yourselves from doom!
"Take the Teeth of Gwahlur from the crypt where they were placed so long ago. Alkmeenon is no longer holy, because it has been desecrated by blasphemers. Give the Teeth of Gwahlur into the hands of Thutmekri, the Stygian, to place in the sanctuary of Dagon and Derketo. Only this can save Keshan from the doom the demons of the night have plotted. Take the Teeth of Gwahlur and go; return instantly to Keshia; there give the jewels to Thutmekri, and seize the foreign devil Conan and flay him alive in the great square."
There was no hesitation in obeying. Chattering with fear the priests scrambled up and ran for the door that opened behind the bestial god. Gorulga led the flight. They jammed briefly in the doorway, yelping as wildly waving torches touched squirming black bodies; they plunged through, and the patter of their speeding feet dwindled down the tunnel.
Conan did not follow. He was consumed with a furious desire to learn the truth of this fantastic affair. Was that indeed Yelaya, as the cold sweat on the backs of his hands told him, or was it that little hussy Muriela, turned traitress after all? If it was —
Before the last torch had vanished down the black tunnel he was bounding vengefully up the stone stair. The blue glow was dying down, but he could still make out that the ivory figure stood motionless on the gallery. His blood ran cold as he approached it, but he did not hesitate. He came on with his sword lifted, and towered like a threat of death over the inscrutable shape.
"Yelaya!" he snarled. "Dead as she's been for a thousand years!Ha! "
From the dark mouth of a tunnel behind him a dark form lunged. But the sudden, deadly rush of unshod feet had reached the Cimmerian's quick ears. He whirled like a cat and dodged the blow aimed murderously at his back. As the gleaming steel in the dark hand hissed past him, he struck back with the fury of a roused python, and the long straight blade impaled his assailant and stood out a foot and a half between his shoulders.
"So!" Conan tore his sword free as the victim sagged to the floor, gasping and gurgling. The man writhed briefly and stiffened. In the dying light Conan saw a black body and ebon countenance, hideous in the blue glare. He had killed Gwarunga.
Conan turned from the corpse to the goddess. Thongs about her knees and breast held her upright against tha stone pillar, and her thick hair, fastented to the column, held her head up. At a few yards' distance these bonds were not visible in the uncertain light.
"He must have come to after I descended into the tunnel," muttered Conan. "He must have suspected I was down there. So he pulled out the dagger" — Conan stooped and wrenched the identical weapon from the stiffening fingers, glanced at it and replaced it in his own girdle — "and shut the door. Then he took Yelaya to befool his brother idiots. That was he shouting a while ago. You couldn't recognize his voice, under this echoing roof. And that bursting blue flame — I thought it looked familiar. It's a trick of the Stygian priests. Thutmekri must have given some of it to Gwarunga."