When they had finished, their attendant spoke for the first time.

“It is the will of Vulthoom that you should wander throughout Ravormos and behold the wonders of the caverns. You are at liberty to roam alone and unattended; or, if you prefer, I shall serve you as a guide. My name is Ta-Vho-Shai, and I am ready to answer any questions that you ask. Also, you may dismiss me at will.”

Haines and Chanler, after a brief discussion, decided to accept this offer of ciceronage. They followed the Aihai through the garden, whose extent was hard to determine because of the misty amber luminance that filled it as if with radiant atoms, giving the impression of unbounded space. The light, they learned from Ta-Vho-Shai, was emitted by the lofty roof and walls beneath the action of an electro-magnetic force of wave-length shorter even than the cosmic rays; and it possessed all the essential qualities of sunlight.

The garden was composed of weird plants and blossoms, many of which were exotic to Mars, and had perhaps been imported from the alien solar system to which Vulthoom was native. Some of the flowers were enormous mats of petals, like a hundred orchids joined into one. There were cruciform trees, hung with fantastically long and variegated leaves that resembled heraldic pennons or scrolls of cryptic writing; and others were branched and fruited in outlandish ways.

Beyond the garden, they entered a world of open passages and chambered caverns, some of which were filled with machinery or with storage-vats and urns. In others, immense ingots of precious and semi-precious metals were piled, and gigantic coffers spilled their flashing, hundred-colored gems as if to tempt the earth-men.

Most of the machines were in action, though untended, and Haines and Chanler were told that they could run in this manner for centuries or millenaries. Their operation was inexplicable even to Haines with his expert knowledge of mechanics. Vulthoom and his people had gone beyond the spectrum, and beyond the audible vibrations of sound, and had compelled the hidden forces of the universe to appear and obey them.

Everywhere there was a loud beating as of metal pulses, a mutter as of prisoned Afrits and servile iron titans. Valves opened and shut with a harsh clangor. There were rooms pillared with strident dynamos; and others where groups of mysteriously levitated spheres were spinning silently, like suns and planets in the void of space.

They climbed a flight of stairs, colossal as the steps of the pyramid of Cheops, to a higher level. Haines, in a dream-like fashion, seemed to remember descending these stairs, and thought they were now nearing the chamber in which he and Chanler had been interviewed by the hidden entity, Vulthoom. He was not sure, however; and Ta-Vho-Shai led them through a series of vast rooms that appeared to serve the purpose of laboratories. In most of these, there were age-old colossi, bending like alchemists over furnaces that burned with cold fire, and retorts that fumed with queer threads and ropes of vapor. One room was untenanted, and was furnished with no apparatus, other than three great bottles of clear, uncolored glass, taller than a tall man, and having somewhat the form of Roman amphorae. To all appearances the bottles were empty; but they were closed with double-handed stoppers that a human being could scarcely have lifted.

“What are these bottles?” Chanler asked the guide.

“They are the Bottles of Sleep,” said the Aihai, with the solemn and sententious air of a lecturer. “Each of them is filled with a rare, invisible gas. When the time comes for the thousand-year slumber of Vulthoom, the gases are released; and, mingling, they pervade the atmosphere of Ravormos, even to the lowest cavern, inducing sleep for a similar period in us who serve Vulthoom. Time no longer exists; and eons are no more than instants for the sleepers; and they awaken only at the hour of Vulthoom’s awakening.”

Haines and Chanler, filled with curiosity, were prompted to ask many questions, but most of these were answered vaguely and ambiguously by Ta-Vho-Shai, who seemed eager to continue his ciceronage through other and ulterior parts of Ravormos. He could tell them nothing about the chemical nature of the gases; and Vulthoom himself, if the veracity of Ta-Vho-Shai could be trusted, was a mystery even to his own followers, most of whom had never beheld him in person.

Ta-Vho-Shai conducted the earth-men from the room of bottles, and down a long straight cavern, wholly deserted, where a rumbling and pounding as of innumerable engines came to meet them. The sound broke upon them like a Niagara of evil thunders when they emerged finally in a sort of pillared gallery that surrounded a mile-wide gulf illumined by the terrible flaring of tongued fires that rose incessantly from its depths.

It was as if they looked down into some infernal circle of angry light and tortured shadow. Far beneath, they saw a colossal structure of curved and glittering girders, like the strangely articulated bones of a metal behemoth outstretched along the bottom of the pit. Around it, furnaces belched like the flaming mouths of dragons; tremendous cranes went up and down perpetually with a motion as of long-necked plesiosaurs; and the figures of giants, red as laboring demons, moved through the sinister glare.

“They build the ether-ship in which Vulthoom will voyage to the Earth,” said Ta-Vho-Shai. “When all is ready, the ship will blast its way to the surface by means of atomic disintegrators. The very stone will melt before it like vapor. Ignar-Luth, which lies directly above, will be consumed as if the central fires of the planet had broken loose.”

Haines and Chanler, appalled, could offer no rejoinder. More and more they were stunned by the mystery and magnitude, the terror and menace, of this unsuspected cavern-world. Here, they felt, a malign Power, armed with untold arcana of science, was plotting some baleful conquest; a doom that might involve the peopled worlds of the system was being incubated in secrecy and darkness. They, it seemed, were helpless to escape and give warning, and their own fate was shadowed by insoluble gloom.

A gust of hot, metallic vapor, mounting from the abyss, burned corrosively in their nostrils as they peered from the gallery’s verge. Ill and giddy, they drew back.

“What lies beyond this gulf?” Chanler inquired, when his sickness had passed.

“The gallery leads to other caverns, little used, which conduct on the dry bed of an ancient underground river. This river-bed, running for many miles, emerges in a sunken desert far below sea-level, and lying to the west of Ignarh.”

The earth-men started at this information, which seemed to offer them a possible avenue of escape. Both, however, thought it well to dissemble their interest. Pretending fatigue, they asked the Aihai to lead them to some chamber in which they could rest awhile and could discuss at leisure the proposition of Vulthoom.

Ta-Vho-Shai, professing himself at their service in all ways, took them to a small room beyond the laboratories. It was a sort of bed-chamber, with two tiers of couches along the walls. These couches, from their length, were evidently designed to accommodate the giant Martians. Here Haines and Chanler were left alone by Ta-Vho-Shai who had tacitly inferred that his presence was no longer needed.

“Well,” said Chanler, “it looks as if there were a chance of escape if we can only reach that river bed. I took careful note of the corridors we followed on our return from the gallery. It should be easy enough—unless we are being watched without our knowledge.”

“The only trouble is, it’s too easy…. But anyway, we can try. Anything would be better than waiting around like this. After what we’ve seen and heard, I’m beginning to believe that Vulthoom really is the Devil—even though he doesn’t claim to be.”