descend snugly into place.
They were trapped!
Standing there tense, speechless, they waited, wondering what would be the next move of this strange enemy who held them now so surely in his power.
Nor had they long to wait.
Almost immediately, there issued a gurgling sound from the inclined gallery, and turning their eyes in the direction of this new phenomena, they saw that the water level was receding, as though under pressure from above.
“Singular!” muttered Professor Stevens. “A sort of primitive lock. It seems incredible that human creatures could exist down here, but such appears to be the case.”
Larry had no desire to dispute the assumption, nor had Diane. They stood there as people might in the imminence of the supernatural, awaiting they knew not what.
Swiftly the water receded.
Now it was scarcely up to their waists, now plashing about their ankles, and now the room was empty.
The next moment, there sounded a rush of feet – and down the gallery came a swarm of the strangest beings any of them had ever seen.
They were short, thin, almost emaciated, with pale, pinched faces and pasty, half-naked bodies. But they shimmered with ornaments of gold and jade, like some strange princes from the realm of Neptune – or rather, like Aztec chieftains of the days of Cortes, thought Larry.
Blinking in the glare of the searchlights, they clamored around their captives, touching their pressure-suits half in awe and chattering among themselves.
Then one of them, larger and more regally clad than the rest, stepped up and gestured toward the balcony.
“They obviously desire us to accompany them above,” said the professor, “and quite as obviously we have little choice in the matter, so I suggest we do so.”
“Check!” said Larry.
“And double-check!” added Diane.
So they started up, preceded by a handful of their captors and followed by the main party.
The gallery seemed to be leading toward the center of the pyramid, but after a hundred feet or so it turned and continued up at a right angle, turning twice more before they arrived at length in another stone chamber, smaller than the one below.
Here their guides paused and waited for the main party.
There followed another conference, whereupon their leader stepped up again, indicating this time that they were to remove their suits.
At this, Professor Stevens balked.
“It is suicide!” he declared. “The air to which they are accustomed here is doubtless at many times our own atmospheric pressure.”
“But I don’t see that there’s anything to do about it,” said Larry, as their captors danced about them menacingly. “I for one will take a chance!”
And before they could stop him, he had pressed the release-valve, emitting the air from his suit – slowly, at first, then more and more rapidly, as no ill effects seemed to result.
Finally, flinging off the now deflated suit, he stepped before them in his ordinary clothes, calling with a smile:
“Come on out, folks – the air’s fine!”
This statement was somewhat of an exaggeration, as the air smelt dank and bad. But at least it was breathable, as Diane and her father found when they emerged from their own suits.
They discovered, furthermore, now that their flashlights were no longer operating, that a faint illumination lit the room, issuing from a number of small crystal jars suspended from the walls: some sort of phosphorescence, evidently.
Once again the leader of the curious throng stepped up to them, beaming now and addressing Professor Stevens in some barbaric tongue, and, to their amazement, he replied in words approximating its harsh syllables.
“Why, daddy!” gasped Diane. “How can you talk to him?”
“Simply enough,” was the reply. “They speak a language which seems to be about one-third Basque, mixed oddly with Greek. It merely proves another hypothesis of mine, namely, that the Atlantean influence reached eastward to the Pyrenees mountains and the Hellenic peninsula, as well as to Egypt.”
Whereupon he turned and continued his conversation, haltingly it is true and with many gestures, but understandably nevertheless.
“I have received considerable enlightenment as to the mystery of this strange sunken empire,” he reported, turning back to them at length. “It is a singular story this creature tells, of how his country sank slowly beneath the waves, during the course of centuries, and of how his ancestors adapted themselves by degrees to the present conditions. I shall report it to you both, in detail, when time affords. But the main thing now is that a man similar to ourselves has conquered their country and set himself up as emperor. It is to him we are about to be taken.”
“But it doesn’t seem possible!” exclaimed Diane. “Why, how could he have got down here?”
“In a craft similar to our own, according to this creature. Heaven knows what it is we are about to face! But whatever it is, we will face it bravely.”
“Check and double-check!” said Larry, with a glance toward Diane that told her she would not find him wanting.
They were not destined to meet the test just then, however, for just at that moment a courier in breech-clout and sandals dashed up the gallery and burst into the room, bearing in his right hand a thin square of metal.
Bowing, he handed it to the leader of the pigmy throng, with the awed word:
“Cabiri!”
At this, Professor Stevens gave a start.
“A message from their high priests!” he whispered.
Whatever it contained, the effect produced on the reader was profound. Facing his companions, he addressed them gravely. Then, turning from the room, he commanded the captives to follow.
The way led back down the inclined gallery to a point where another door now stood open, then on down until finally the passage leveled out into a long, straight tunnel.
This they traversed for fully a mile, entering at length a large, square chamber where for a moment they paused.
“I judge we are now at the base of the large pyramid,” the professor voiced in an undertone. “It would naturally be the abode of the high priests.”
“But what do you suppose they want with us?” asked Diane.
“That I am not disposed to conjecture,” was her father’s reply.
But the note of anxiety in his voice was not lost on Diane, nor on Larry, who pressed her hand reassuringly.
Now their captors led them from the room through a small door opening on another inclined gallery, whose turns they followed until all were out of breath from the climb.
It ended abruptly on a short, level corridor with apertures to left and right.
Into the latter they were led, finding themselves in a grotesquely furnished room, lit dimly by phosphorescent lamps.
Swiftly the leader addressed Professor Stevens. Then all withdrew. The aperture was closed by a sliding block of stone.
For a moment they stood there silent, straining their eyes in the gloom to detect the details of their surroundings, which included several curious chairs and a number of mattings strewn on the tiled floor.
“What did he say?” asked Diane at length, in a tremulous voice.
“He said we will remain here for the night,” her father replied, “and will be taken before the high priests at dawn.”
“At dawn!” exclaimed Larry. “How the deuce do they know when it is dawn, down here?”
“By their calendars, which they have kept accurately,” was the answer. “But there are many other