"Maybe it does," agreed d.i.c.k. "But I don't hear any water running."

"Nor I," added his brother.

"Maybe I was mistaken," Bud admitted. "But I sure would like to come across that missing water of mine!"

He little realized, nor did the others, what fruit his wish was to bear, and that very shortly.

"I guess what you heard was the echoes," spoke d.i.c.k. "I never heard so many queer noises."

"It's like the cave of the winds," murmured Nort. "But it's a great adventure all the same, Bud! I mean it would be great if we didn't have to worry about the water not coming back," he made haste to add, for he realized what it would mean to their new ranch in Flume Valley if no drink could be had for the cattle.

"It beats the finding of the Triceratops all to slathers!" exclaimed d.i.c.k, "and that was no slouch of a happening, either."

"Yes, no telling what's ahead of us," spoke Bud, as he walked along, unsteadily enough for the way was rough and filled with stones. And, as the boys tramped along in the tunnel, part of the time in the very bed of the stream that had gone dry, their lanterns cast fantastic shadows on the rocky walls. I have said that the stream was dry, but this was not strictly true, for in places, where the uneven bed formed depressions, there were pools of water. And, in some places, there were even little rills trickling along. But they never would reach the iron pipe that discharged into the reservoir.

On and on tramped the boys, pausing, now and then, to hold up their lanterns and inspect the rocky walls of the underground tunnel which echoed so strangely to their footsteps, and through which swept strange, cold and clammy winds.

"Well, I reckon we'll have to go all the way to the end before we discover anything, if we do find it," said Bud, when they had walked on for over an hour. Their pace was slow because of the uneven footing.

"And when we get to the other end and find the water running into the pipe at the dam in Pocut River, what then?" asked Nort.

"We'll hardly find that, I think," said Bud. "Or, I mean, we won't have to go all the way to the other end if the water is found running there."

"Why not?" asked d.i.c.k.

"Because, if the water's running in from the dam end of the pipe, we'll meet the stream before we get all the way through the tunnel," Bud explained. "I meant to call up on the telephone and find out if everything was all right at the river end before we started out, but I forgot. My theory is that the stream gets into this tunnel from the river all right, but is shunted off before it reaches us," he added.

"How shunted?" d.i.c.k wanted to know.

"That's what I can't tell," spoke Bud. "But why try to puzzle this out until we get something better to work on? I'm hungry! What do you say that we eat?"

"Suits me," agreed Nort.

"I'm not going to vote in the negative," a.s.serted d.i.c.k.

They judged that they were about a quarter way through the mysterious tunnel now, and, setting down the lanterns on the rocky floor, the boy ranchers took out the food they had brought with them. It would be risky to kindle a fire in that enclosed place, Bud decided, as the smoke might choke them, though so far they had found an abundance of fresh air, a current blowing part of the time in their faces, and part of the time in the opposite direction. This proved that there was a good draft in the elongated cave, but it was voted best not to take any chances, though there was plenty of dried driftwood on the tunnel floor, and this could have been used for a blaze.

But the boys sat about in the gleam of their lanterns, and, while they ate the sandwiches they had brought, they talked of the strange happenings that had led up to this venture in which they were now joined.

Suddenly Bud, who had just taken up a piece of fruit cake, part of a chunk that his pretty sister Nell had sent over from the main ranch house a day or so before, stopped chewing in order to listen better; for, as you doubtless know, the action of the jaws precludes keen attention to outside sounds.

"What's the matter?" asked d.i.c.k, noting his cousin's act.

"I heard something," Bud answered.

"I'm hearing things all the while!" declared d.i.c.k. "This is the most weird place for mysterious noises I ever struck!"

"But this is different," insisted Bud. "Listen!"

Nort and d.i.c.k stopped chewing and strained their ears to catch the sound that had attracted Bud's attention. A strange, rushing, whispering echo seemed to fill the tunnel.

"Doesn't that sound like rushing water?" asked Bud.

"Yes," agreed d.i.c.k, after a moment of intentness; "it does."

"Look out!" quickly yelled Nort. "It _is_ water, and on the rush, too!

Jump for your lives! It's a flood!" and making a grab for one of the lanterns, that they might not be left in total blackness, he sprang toward the rocky side of the tunnel, an example followed by his companions.

And the rush of waters filled the underground cave with a mighty, roaring sound.

CHAPTER XII

THE RISING FLOOD

Stumbling, slipping, sliding, half-falling, bruising themselves on the sharp rocks, but ever leaping forward toward the sides of the tunnel, and away from the depressed centre down which they could see the rush of waters coming, the boy ranchers at last managed to reach the granite wall. Nort had succeeded in grabbing up one of the lanterns, but there was no time for d.i.c.k or Bud to take one, and the food had to be abandoned.

"Climb up! Climb up, if there's a ledge!" shouted Bud. "We'll be drowned if we can't get above the water!"

He had, somehow or other, brought up in the rear. Though he did not admit it, this was because he had shoved his cousins ahead of him, hoping thus to enable them to gain a safe place.

And as Nort and d.i.c.k glanced back they saw, in the gleam of the one lantern left alight, a white ma.s.s of water bearing down on them, and, seemingly, filling the tunnel from wall to wall, as it rushed foaming and murmuring onward.

It was as though a dam had suddenly burst, or some obstruction had been removed, allowing the pent-up waters to rush along the accustomed channel. And if you have ever noticed a dammed-up stream, say in some gutter, thus quickly released, you can imagine what happened on a larger scale in the tunnel where the boys were.

The water, normally, flowed only in the four-foot channel. But now it spread out on either side, and, of course, was much deeper in the centre. But as the tunnel sloped from either wall, in a sort of V shape to the centre channel, naturally the parts nearest the side walls were less covered by water than the others.

It was because of this that Bud, Nort and d.i.c.k were enabled to maintain a footing, though they were knee-deep in water in an instant, and the one remaining lantern had to be held up to prevent it from being engulfed and extinguished in the sudden flood.

"Climb up! Climb up!" shouted Bud. "Isn't there some place--some rocky ledge--where you can find a footing? The water's getting deeper!"

And this was true. Either the flood was growing at its source (a place as yet unknown to the boys) or it was running too rapidly, and in too great a volume, to accommodate itself to the tunnel channel, and was thus piling up in the vicinity of the boys.

"What happened? What caused it?" cried Nort.

"Never mind that--now!" shouted Bud. "Find the highest place you can, and stick!"

"Suppose the whole tunnel fills?" asked d.i.c.k, trying to pierce the semi-gloom, and look for a refuge on the rocky wall.

"If it does we'll have to swim for it," grimly said Bud. "But isn't there some place where you can climb up?"

"This looks like a ledge," d.i.c.k answered, as he caught sight of a darker shadow on the rocky wall of the tunnel, above his head, when his brother swung the lantern.

"Just what we need!" exclaimed Bud, as he waded through the ever-deepening water to the side of his cousins. "Up with you! Here, Nort, I'll hold the lantern until you make it!"

Thus, again, Bud was seeing that his cousins reached a place of comparative safety before he looked to himself. For they found the ledge, once they had scrambled up to it, well above the water, and wide enough to give shelter and a safe perch for all three.