"What does all this mean?" he exclaimed in a kind of pa.s.sionate outburst. "Where are we? How did you get here? Can't you understand me? We're Americans, I tell you--Americans! For G.o.d's sake, _can't you understand?_"

Once more the word "Merucaans" pa.s.sed round from mouth to mouth; but beyond this Stern got no sign of comprehension.

"Village! Houses!" shouted he. "Shelter! Rest, eat, sleep!"

They merely shoved him forward up the slope, together with the girl; and now Stern saw a curious kind of causeway, paved with slippery, wet, black stones that gleamed in the torchlight, a causeway slanting sharply upward, its further end hidden in the dense vapor behind which the great and unknown light shone with ever-clearer glowing.

This road wash bordered on either hand by a wall of carefully cut stone about three and a half feet high; and into the wall, at equal distances of twenty feet or so, iron rods had been let. Each rod bore a fire-basket, some only dully flickering, some burning bright and blue.

Numbers of the strange folk were loitering on the causeway or coming down to join the throng which now ascended; many clambered lithely up onto the wall, and, holding to the rods or to each other--for the stones, like everything here, were wet and glairy--watched with those singular-hued and squinting eyes of theirs the pa.s.sage of the strangers.

Stern and Beatrice, their breathing now oppressed by the thickening smoke which everywhere hung heavy, as well as by this fresh exertion in the densely compressed air, toiled, panting, up the steep incline.

The engineer was already bathed in a heavy sweat. The intense heat, well above a hundred degrees, added to the humidity, almost stifled him. His bound arms pained almost beyond endurance. Unable to balance himself, he slipped and staggered.

"Beatrice!" he called chokingly. "Try to make them understand I want my hands freed. It's bad enough trying to clamber up this infernal road, anyhow, without having to go at it all trussed up this way."

She, needing no second appeal, raised her free arms, pointed to her wrists and then at his, and made a gesture as of cutting. But the elder boatman of Stern's canoe--seemingly a person of some authority--only shook his head and urged the prisoners upward, ever upward toward the great and growing light.

Now they had reached the top of the ascent.

On either hand, vanishing in shadows and mist, heavy and high walls extended, all built of black, cut stone surmounted by cressets.

Through a gateway the throng pa.s.sed, and the prisoners with them--a gateway built of two ma.s.sive monoliths of dressed stone, octagonal and highly polished, with a huge, straight plinth that Stern estimated at a glance never could have weighed less than ten tons.

"Ironwork, heavy stonework, weaving, fisheries--a good beginning here to work on," thought the engineer. But there was little time for a.n.a.lysis. For now already they were pa.s.sing through a complex series of inner gateways, pa.s.sages, detours and labyrinthic defenses which--all well lighted from above by fire-baskets--spoke only too plainly the character of the enclosure within.

"A walled town, heavily fortified," Stern realized as he and Beatrice were thrust forward through the last gate. "Evidently these people are living here in constant fear of attack by formidable foes. I'll wager there's been some terrible fighting in these narrow ways--and there may be some more, too, before we're through with it. G.o.d, what a place! Makes me think of the _machicoulis_ and pasterns at old Carca.s.sonne. So far as this is concerned, we're back again in the Dark Ages--dark, dark as Erebus!"

Then, all at once, out they issued into so strange a scene that, involuntarily, the two captives stopped short, staring about them with wide eyes.

Stretching away before them till the fog swallowed it--a fog now glowing with light from some source still mist-hidden--an open plaza stretched. This plaza was all surrounded, so far as they could see, with singular huts, built of dressed stone, circular for the most part, and with conical roofs like monster beehives. Windows there were none, but each hut had an open door facing the source of the strange, blue-green light.

Stern could now see the inside of the wall, topped with torches; its crest rose some five feet above the level of the plaza; and, where he could catch a glimpse of its base between the huts and through the crowding folk, he noticed that huge quant.i.ties of boulders were piled as though for instant use in case of attack.

A singular dripping of warmish water, here a huge drop, there another, attracted his attention; but though he looked up to determine its source, if possible, he could see nothing except the glowing mist. The whole floor of the enclosure seemed to be wet and shining with this water; and all the roughly clad folk, now coming from the huts and concentrating toward the captives, from every direction, were wet as well, as though with this curious, constant, spa.r.s.ely scattered rain.

Not a quadruped of any kind was to be seen. Neither cat nor dog was there, neither goat nor pig nor any other creature such as in the meanest savage villages of other times might have been found upon the surface of the earth. But, undisturbed and bold, numbers of a most extraordinary fowl--a long-legged, red-necked fowl, wattled and huge of beak--gravely waddled here and there or perched singly and in solemn rows upon the huts.

"Great Heavens, Beatrice," exclaimed the engineer, "what are we up against? Of all the incredible places! That light! That roaring!"

He had difficulty in making himself even heard. For now the hissing roar which they had perceived from afar off seemed to fill the place with a tremendous vibrant blur, rising, falling, as the light waxed and waned.

Terribly confusing all these new sense-impressions were to Stern and Beatrice in their unnerved and weakened state. And, staring about them as they went, they slowly moved along with the motion of their captors toward the great light.

All at once Stern stopped, with a startled cry.

"The infernal devils!" he exclaimed, and recoiled with an involuntary shudder from the sight that met his eyes.

The girl, too, cried out in fear.

Some air-current, some heated blast of vapor from the vast flame they now saw shooting upward from the stone flooring of the plaza, momently dispelled the thick, white vapors.

Stern got a glimpse of a circular row of stone posts, each about nine feet high--he saw not the complete circle, but enough of it to judge its diameter as some fifty feet. In the center stood a round and ma.s.sive building, and from each post to that building stretched a metal rod perhaps twenty feet in length.

"Look! _Look!_" gasped Beatrice, and pointed.

Then, deadly pale, she hid her face in both her hands and crouched away, as though to blot the sight from her perception.

Each metal bar was sagging with a hideous load--a row of human skeletons, stark, fleshless, frightful in their ghastliness. All were headless. All, suspended by the cervical vertebrae, swayed lightly as the blue-green light glared on them with its weird, unearthly radiance.

Before either Stern or the girl had time even to struggle or so much as recover from the shock of this fell sight, they were both pushed roughly between two of the posts into the frightful circle.

Stern saw a door yawn black before them in the ma.s.sive hut of stone.

Toward this the Folk of the Abyss were thrusting them.

"No, you don't, d.a.m.n you!" he howled with sudden pa.s.sion. "None o'

that for _us!_ Shoot, Beta! _Shoot!_"

But even as her hand jerked at the b.u.t.t of the automatic, in its rawhide holster on her hip, an overmastering force flung them both forward into the foul dark of the round dungeon. A metal door clanged shut. Absolute darkness fell.

"My G.o.d!" cried Stern. "Beta! Where are you? Beta! _Beta!_"

But answer there was none. The girl had fainted.

CHAPTER XXVI

"YOU SPEAK ENGLISH!"

Even in his pain and rage and fear, Stern did not lose his wits. Too great the peril, he subconsciously realized, for any false step now. Despite the fact that the stone prison could measure no more than some ten feet in diameter, he knew that in its floors some pit or fissure might exist, frightfully deep, for their destruction.

And other dangers, too, might lie hidden in this fearful place. So, restraining himself with a strong effort, he stood there motionless a few seconds, listening, trying to think. Severe now the pain from his lashed wrists had grown, but he no longer felt it. Strange visions seemed to dance before his eyes, for weakness and fever were at work upon him. In his ears still sounded, though m.u.f.fled now, the constant hissing roar of the great flame, the mysterious and monstrous jet of fire which seemed to form the center of this unknown, incomprehensible life in the abyss.

"Merciful Heavens!" gasped he. "That fire--those skeletons--this black cell--what can they mean?" He found no answer in his bewildered brain.

Once more he called, "Beatrice! _Beatrice!_" but only the close echo of the prison replied.

He listened, holding his breath in sickening fear. Was there, in truth, some waiting, yawning chasm in the cell, and had she, thrust rudely forward, been hurled down it? At the thought he set his jaws with terrible menace and swore, to the last drop of his blood, vengeance on these inhuman captors.

But as he listened, standing there with bound hands in the thick gloom, he seemed to catch a slow and sighing sound, as of troubled breathing. Again he called. No answer. Then he understood the truth.

And, unable to grope with his hands, he swung one foot slowly, gently, in the partial circ.u.mference of a circle.

At first he found nothing save the smooth and slippery stone of the floor, but, having shifted his position very cautiously and tried again, he experienced the great joy of feeling his sandaled foot come in contact with the girl's prostrate body.

Beside her on the floor he knelt. He could not free his hands, but he could call to her and kiss her face. And presently, even while the joy of this discovery was keen upon him, obscuring the hot rage he felt, she moved, she spoke a few vague words, and reached her hands up to him; she clasped him in her arms.