The Border Boys Across the Frontier

by Goldfrap, John Henry

  "Good gracious, did we fall down all those?" murmured Ralph, rubbing his elbow painfully.

  "Guess so. I know I feel as if I'd been monkeying with a buzz-saw," same [Transcriber's note: came?] from Walt Phelps.

  "Well, fellows," said Jack, as the light died out, "the question now before us is, what are we going to do?"

  "Try to get out again," said the practical Walt Phelps.

  "All right, Walt. Then we'd better remount those steps—slower than we came down them—and try to reopen that trap-door. We can't leave Pete and the injured professor like this."

  The boys clambered up the steps without difficulty. They were deep and shallow, and were cut out of the living rock. At the head of the stairs, however, a disappointment awaited them. Try as they would, they could not discover any means of reopening the stone trap-door in the floor of the hollow altar. Apparently, after dumping them through, it had closed as hermetically as before.

  The flickering light of the matches from Jack's store illuminated looks of despair on their faces as they realized that they were trapped.

  "Try pounding on it and shouting," suggested Ralph.

  Although Jack deemed it of little use, he and Walt followed this suggestion, and together the three boys beat and hammered on the massive stone above them till their hands were raw. There was no response, however. Apparently the stone was too thick for a sound to penetrate to the outer air. Terror, that was almost panic, seized Walt and Ralph, as they realized that they were prisoners in this hermetically sealed dungeon. Worse than prisoners, in fact. Prisoners had food and at least hope. They, unless they could find a way out, were buried alive. Even Jack's stout heart experienced a deadly feeling of depression, as he realized this. He concealed his despair from his companions, however, and, with all the cheerfulness he could muster, addressed them in the darkness. Matches had now grown too precious to squander.

  "Well, fellows, we've got to find another way out."

  "Oh, it's no good," moaned Ralph despairingly, "we're doomed to die here. We might as well sit down and wait for death to come."

  "Say," cut in Jack briskly, "if it was light enough to see, I'd give you a good licking. Doomed to die, indeed! Not much. It's a cinch, isn't it, that if there is an entrance to this place there must be an outlet, too? Very well, then," he hurried on, without waiting for an answer, "let's find that outlet."

  The logic of this speech might be questioned, but of its good sense, under the circumstances, there was no doubt.

  "You're right, Jack," said Ralph. "I'm ashamed of myself for doing the baby act. Come on, let's set out at once."

  "That's the talk," said Walt heartily; "if there's a way out, we'll find it."

  "And if not?" asked Ralph, his spirits flagging again.

  "We'll discuss that later," declared Jack briskly.

  Returning again to the landing—if such it might be called—upon which they had terminated their abrupt descent into the interior of the mesa, some more of the precious matches were lit. As the last flickered out, the boys fancied that some feet from them they could see a black mouth, like the entrance of a tunnel, or rather a continuation of the one into which they had been thrown.

  "Come on, boys," exclaimed Jack. "It's the only thing to do. We can't turn back, and, as Pete says, 'there ain't nothing to do but go ahead.'"

  Not without some misgivings did the three lads plunge forward in the darkness, feeling their way with outstretched hands as they entered the tunnel. A close, musty smell, as of things long mildewed and moulded, filled the air, and an oppressive silence lay on everything. Unconsciously, since entering this place, their conversation had been all in whispers.

  The tunnel they were now traversing was bored on a pretty steep down grade. So steep, in fact, that Jack concluded, after about a quarter of an hour of slow and cautious traveling, that they must be below the level of the desert. For the last few minutes they had been conscious of a peculiar thing. This was that the silence of the tunnel had given place to a deep-throated roaring, not unlike the voice of a blast furnace. Where it came from, or what it was, they had no idea. It was a most peculiar sound, though, steady as a trade-wind, and seeming to fill the whole place with its deep vibrations.

  "What can it be?" gasped Walt, as they paused by common consent to listen.

  "Maybe the wind roaring by the entrance to this place," suggested Jack hopefully.

  This thought gave them new courage, and, on Ralph's suggestion, Jack struck another match from his store. As it flared up, they all three recoiled with expressions of dismay.

  At their very feet—so close that the tips of their boots almost projected over it—was a deep chasm. The black profundity of it loomed in front of them gapingly. A few paces more, and they would have been precipitated into the abyss. Jack, suppressing a shudder, leaned forward and held the match as far over the edge as he dared. As the depths of the great crevasse were illuminated by a feeble flame, he shrank back with a sharp intake of his breath.

  [Illustration: As it flared up, they all three recoiled with

  expressions of dismay. At their very feet was a deep chasm.]

  The place was a charnel house!

  No mystery now as to what had become of the human remains of the grisly sacrifices of the ancient mesa dwellers. There, piled in that dark chasm beneath them, were great piles of decaying bones and gleaming skulls. Hundreds of them extended toward the surface in a ghastly pyramid. No wonder the underground place into which they had penetrated smelled musty and unpleasant.

  "It is the mesa dwellers' burial ground!" exclaimed Ralph in a quavering voice, as, clinging to Jack's arm, he bent forward.

  "Yes," rejoined Walt with a shudder, "and but for Providence, we should have plunged downward into it ourselves."

  "Ugh!" exclaimed Jack, in a voice filled with repulsion. "Don't let's think of it. See, the path takes a turn here. Come on, let's go ahead, but follow me closely and keep in to the wall."

  "Not likely to take any chances of missing the road, after seeing that," spoke up Walt, as once more the three youths, who had been so strangely plunged into this predicament, began to tread the subterranean regions once more.

  As you may imagine, they went with due caution. But no more dangers menaced them, and as they progressed the path began to widen. All the time, however, the strange roaring sound had been growing louder, until now it had attained almost deafening proportions. Still they had come upon no explanation of what it could be. Jack had privately concluded it to be the sound of the wind, forcing its way into some crevice. This theory seemed to be the more tenable as the last match which he had struck had only been kept alight with difficulty, so strong had been the draught that now puffed up toward them.

  Far from alarming them, however, this gave them renewed hope. It meant that, in all probability, they were nearing an outlet of the strange underground place. Had it not been for the predicament in which they had left the professor and Coyote Pete, the three lads would have felt a real interest in exploring the cavern, now that they had grown accustomed to their surroundings. So far as they had been able to make out, the tunnel they had been treading was partially the work of human hands and partially the work of Nature. The great rift in which lay the accumulation of human remains was evidently the result of some volcanic upheaval. The path, however, was so graded and formed that there seemed no reason to doubt that it had, at one time, been made by the ancient mesa dwellers.

  "Seems to me we ought to find out what that roaring sound means before we go any farther," suggested Ralph suddenly.

  "That's a fine Irish bull," laughed Jack. "How are we going to find what it is unless we do go farther?"

  "That's so," agreed Ralph, somewhat abashed. "Come on, then."

  A few paces more brought them to an abrupt turn in the path, as they could feel by their constant touching of the inner wall.

  "Better strike another match," said Walt.

  "Yes; here goes," agreed Jack. Both boys shouted, to ma
ke themselves heard above the now thunderous roaring of the strange noise.

  A shout of surprise that rose even above the mysterious roaring, followed the striking of the match. Beyond the turn the path took a steep drop downward, and beyond that—the boys could hardly believe their eyes as they gazed—was the glint of rushing water.

  "The subterranean river!" was the amazed cry that broke from the lips of all three.

  CHAPTER X.

  A NEW MEXICAN STYX.

  "The subterranean river!"

  The words echoed back weirdly from the vault-like chamber into which they had now penetrated, and at the bottom of which the stream, upon which the light of the match had glistened, flowed rapidly. Within this spacious place the noise was not nearly so loud as it had been when confined in the narrow tunnel, which, in fact, acted much as a speaking-tube would have done.

  "It can't be!" gasped Ralph, unwilling to believe his own eyes.

  "But it is," cried Jack, as, all thoughts of their predicament forgotten in this strange discovery, they made lavish use of their matches on gaining the edge of the stream. The river was about twenty feet in width, and they speedily saw that the roaring sound they had heard during their progress through the tunnel was produced by a waterfall some distance above, over which the river plunged into a sort of basin at their feet.

  But this was not the most astonishing thing they found in that first brief but comprehensive inspection. Affixed to the rocky wall at one side of the chamber was a large, bronze lamp. An eager overhauling of the utensil showed it to be filled with oil, and apparently it was not so very long since it had been lighted.

  Hastily applying a match, Jack soon had the rocky chamber lighted, and they could now survey the place into which they had blundered, at their ease. In size it was about the same dimensions as the Council Hall of the mesa, which lay, they knew not how many feet, above them. The river roared down along one side of it, forming a deep, turbid pool just beneath the waterfall, by which it entered the place.

  To their astonishment, the boys now spied in one corner of the chamber several empty boxes piled up. Remains of excelsior and sacking were within them, and they bore the stencilled marks, "Agricultural Machinery, With Care."

  Instantly what Pete had related to him concerning the conversation of the men accompanying Black Ramon flashed into Jack's mind. Could it be possible that they had stumbled upon the place utilized by the gun-runners to convey their ammunition across the border? At this instant, there came a shout from Ralph, who had been peering about the place.

  "A boat!"

  "A what?" The incredulous cry burst from both Jack and Walt.

  "It is a kind of a boat, anyhow. Come here, and look for yourselves."

  Ralph was bending over the rocky marge of the subterranean river at a part of the chamber farthest removed from the waterfall. The water here flowed comparatively slowly, most of its force having been expended in the pool beneath the fall. Sure enough, Ralph had been right. Moored to the bank by two stout ropes attached to iron bars driven into the rock, was a boat—if such a name can be given to the flat-bottomed, floating appliance, upon which the thunderstruck boys gazed.

  The boat, or rather float, was about twenty feet in length and some five feet in beam. It was not unlike, in fact, one of those shallow craft used by duck hunters, only it was square at each end. Evidently it would hold a considerable quantity of freight. More excelsior and burlap litter in the bottom of it showed that whatever had been the contents of the boxes, it had apparently been used to transport them.

  "Boys, we've tumbled over the discovery of the age!" exclaimed Jack, in what was for him, a strangely excited voice.

  The others were not less moved. Their eyes were round and their jaws dropped in incredulous wonderment, as they gazed before them.

  "Will somebody please pinch me?"

  It was Ralph who spoke, turning a countenance solemn and startled upon his comrades.

  "No need to do that, Ralph. You're wide-awake; make no mistake about that."

  "But—but I don't understand," began Walt in a puzzled tone. "What is this place, what——"

  "What is it?" echoed Jack. "It's the gun-runners' underground railroad. Can't you see it? This river, so the old Indian legend says, emerges across the border. In some way these Mexicans heard of it, and learned the secret of the hollow altar. No wonder the government has not been able to find out how the rebels got their arms across the border."

  "Well, what are we going to do, now we've found it?"

  Walt, the practical, propounded the query, as they stood there, half-stunned by the rapidity with which unheard-of events had happened within the last half-hour.

  "Why, I—upon my word, I don't know," laughed Jack, brought up with a round turn by the hard-headed Walt.

  "I do," rejoined Walt.

  "What then?"

  "Escape to the open air."

  "You mean it?" Somehow, in his excitement, Jack had not gone as far as this daring suggestion. And yet it was, after all, the only thing to do. But suddenly another thought occurred to the boy.

  "The professor and Coyote Pete, how can we leave them?"

  "Well, we can't do them any good by remaining buried here, that's certain," replied Walt, in his sensible way.

  Jack and Ralph nodded agreement.

  "On the other hand, if this river really leads out into Mexico, we can take the subway to freedom and then, when we emerge, find out the best thing to do. Maybe we can fall in with some government troops or authorities of some kind."

  "But suppose the insurrectos are in power wherever this river comes out?"

  The question came from Ralph.

  "We'll have to take chances on that, I suppose."

  "Hark!" came suddenly from Jack.

  Far back somewhere in the tunnels they had threaded they could hear loud shouts and cries. The sound of the pursuit boomed out even above the noise of the waterfall.

  "They're after us!" exclaimed Jack.

  "Shall we take the boat?" Walt's usually calm voice shook a little as he asked the question.

  "It's our only chance. Come on, in with you, Ralph."

  Ralph hesitated no longer, but jumped into the little contrivance. A sort of oar lay in the bottom. He thrust it over the side.

  "The water's only about three feet deep," he announced.

  "So much the less chance of our being drowned," rejoined Jack.

  The lad had his knife out—a heavy-bladed hunting weapon. As soon as all was ready he would cut the ropes and set the boat free on the turbulent current.

  "All right!" cried Walt, as he clambered in and took his place by Ralph.

  Jack gave a hasty look around, and the next instant made a flying leap into the little craft. So fast had Black Ramon and his followers taken up the trail after they had discovered that the boys had found the secret of the hollow altar, that they were already entering the chamber.

  Ramon was in the lead. The glare of the lamp fell full on his parchment-like features, as with a roar of recognition, he sighted the boys.

  Ping!

  Something whizzed past Jack's ear, and, chipping the rock above, showered the occupants of the boat with fragments. The sharp report of the Mexican's revolver filled the place. With a quick movement, Jack slashed the rope nearest him. If he had not been in such a hurry, he would have seen that the other should have been severed first. As it was, he had cut the one that held the boat's bow to the stream. Instantly the flat-bottomed craft swung dizzily around, and still held by her stern mooring, dashed against the bank.

  For a minute the boys feared she was stove in, but there was no time to waste on an examination.

  Slash!

  One stroke of the knife severed the remaining rope, already drawn as taut as a piano wire. But, as Jack's knife fell, the place became filled with shouts and confusion.

  Ramon had been a little in advance of his men, and now they were all in the place. A second's glance showed them what had happen
ed. Not only were the boys about to escape, but if they did not stop them the secret of their underground route across the border would be discovered, and its usefulness at an end.

  No wonder they strained every nerve to reach the boys. Ramon himself had bounded to the side of the subterranean river as the boat swung round. As her gunwale had struck the bank, he had leaped aboard. But before he could use his revolver, Walt's powerful arm knocked the weapon out of his hand, and it fell on the bottom of the boat. With a snarl of rage, Ramon flashed round on the boy. But whatever the Mexican might have been able to do with knife or pistol, he was no match for the muscles of the American lad.

  Walt fairly picked the lithe form of the gun-runner from the floor of the boat as Jack's knife fell across the remaining rope. With a splash and a loud cry, Ramon pitched overside into the stream. As he fell, though, he managed to clutch the side of the craft and he hung on, desperately endeavoring to draw himself up into the boat.

  His followers, seeing what had happened, rushed down on them. A tempest of bullets rattled about the boys' heads as they felt the rope part. It was no moment for sentimental hesitation. Walt raised his foot, and the next instant brought his heavy boot down with crushing force on Ramon's clinging fingers.

  With a yelp of pain, the fellow let go and was rolled over and over in the river, while half a dozen of his men waded in to rescue him.

  "Yip-ee-ee-ee! We're off!" yelled Jack, with a true cowboy yell. The lad was carried away by the excitement and thrill of the adventure.

  With a lurch and a bump, the frail craft carrying our three young friends shot forward. The lamp-lit panorama as Ramon, dripping and cursing, was hauled out of the water by his band, flashed before their eyes for a brief moment. The next instant dense darkness fell about them.

  At what seemed to be a mile-a-minute pace they were hurried forward into the unknown.

  CHAPTER XI.

  THE CAMP OF THE GUN-RUNNER

  Jounced against the rough, rock walls, bumped over shoal places, and at times whirled almost broadside on by the swift current, the queer, flat-bottomed boat containing our three young friends was hurried through the darkness. It was the maddest ride any of them had ever taken, and, as we know, they had been through some thrilling experiences since they had first stood on the railroad station platform at Maguez. Had they known it, they could have controlled the boat more or less with the rough oar—the one with which Ralph had sounded the depth of the river—but, of course, they were inexpert in the management of such a craft. They could do nothing but keep still and trust to luck to bring them safely out of their extraordinary predicament.