They're called Tlazitlans. I'm willing to bet it wasn't they who built this city, though."
Techotl's fear did not seem to diminish as they drew away from the chamber where the dead men lay. He kept twisting his head on his shoulder to listen for sounds of pursuit, and stared with burning intensity into every doorway they passed.
Valeria shivered in spite of herself. She feared no man. But the weird floor beneath her feet, the uncanny jewels over her head, dividing the lurking shadows among them, the stealth and terror of their guide, impressed her with a nameless apprehension, a sensation of lurking, inhuman peril.
"They may be between us and Tecuhltli!" he whispered once. "We must beware lest they be lying in wait!"
"Why don't we get out of this infernal palace, and take to the streets?" demanded Valeria.
"There are no streets in Xuchotl," he answered. "No squares nor open courts. The whole city is built like one giant palace under one great roof. The nearest approach to a street is the Great Hall which traverses the city from the north gate to the south gate. The only doors opening into the outer world are the city gates, through which no living man has passed for fifty years."
"How long have you dwelt here?" asked Conan.
"I was born in the castle of Tecuhltli thirty-five years ago. I have never set foot outside the city. For the love of the gods, let us go silently! These halls may be full of lurking devils. Olmec shall tell you all when we reach Tecuhltli."
So in silence they glided on with the green fire-stones blinking overhead and the flaming floors smoldering under their feet, and it seemed to Valeria as if they fled through hell, guided by a dark-faced, lank-haired goblin.
Yet it was Conan who halted them as they were crossing an unusually wide chamber. His wilderness-bred ears were keener even than the ears of Techotl, whetted though these were by a lifetime of warfare in those silent corridors.
"You think some of your enemies may be ahead of us, lying in ambush?"
"They prowl through these rooms at all hours," answered Techotl, "as do we. The halls and chambers between Tecuhltli and Xotalanc are a disputed region, owned by no man. We call it the Halls of Silence. Why do you ask?"
"Because men are in the chambers ahead of us," answered Conan. "I heard steel clink against stone."
Again a shaking seized Techotl, and he clenched his teeth to keep them from chattering.
"Perhaps they are your friends," suggested Valeria.
"We dare not chance it," he panted, and moved with frenzied activity. He turned aside and glided through a doorway on the left which led into a chamber from which an ivory staircase wound down into darkness.
"This leads to an unlighted corridor below us!" he hissed, great beads of perspiration standing out on his brow. "They may be lurking there, too. It may all be a trick to draw us into it. But we must take the chance that they have laid their ambush in the rooms above. Come swiftly, now!"
Softly as phantoms they descended the stair and came to the mouth of a corridor black as night. They crouched there for a moment, listening, and then melted into it. As they moved along, Valeria's flesh crawled between her shoulders in momentary expectation of a sword-thrust in the dark. But for Conan's iron
