Her efforts pleased Tot, who laughed merrily as the oar splashed in the water; but Dot was determined to get to land if possible and struggled desperately at her task.

The boat was still headed toward the rocky cliffs, when suddenly the oar flew out of Dot's hands and she fell backward off the seat.

She was not hurt, but when she got up she saw the oar floating in the water, out of her reach; still she was rea.s.sured to notice that the boat was now gliding swiftly along, and presently, to her joy, she saw it was headed directly toward the fringe of trees, and getting nearer to the bank every moment.

"It must be another current, Tot," she cried, "and this one is taking us to the sh.o.r.e. So I did some good by rowing, even if I lost the oar."

Tot nodded, but said nothing. He was still enjoying the novel boat ride. Dot sat down on the seat beside him, and they watched the sh.o.r.e grow nearer and more distinct every moment as the boat glided steadily on.

The trees were bigger than they had thought, and grew close down to the water's edge. Dot became worried when she noticed the speed of the boat increasing as they drew nearer to the sh.o.r.e.

"If we b.u.mp those trees," she said, "we may be hurt, and the branches will scratch our faces dreadfully."

Tot stopped smiling when he heard this, and took hold of Dot's hand, which he clasped tightly in his own.

The next moment, still speeding onward, the boat reached the trees.

The two children were caught by the branches, swept quickly from the seat, and sent sprawling at the bottom of the boat. But the boat itself never stopped an instant. There was just room for it to float underneath the thick branches, and instead of b.u.mping into the sh.o.r.e, the water carried it through a small opening in the face of the rocky cliff, and then, in total darkness, it continued swiftly on its way!

Dot and Tot, who were both startled by this unexpected danger, managed to get up and sit together upon the seat of the boat; but they could see nothing before them and only a faint light behind, where they had entered this hidden tunnel in the cliff.

For some moments they sat in silence. Then Dot reached out her hand to see if she could feel anything; but the cool, damp air was all around them. Then she reached upward, and her hand struck against a piece of projecting rock which hurt her.

"Tot," she whispered, "I think we'd better lie down in the bottom of the boat. The roof isn't very high up, and it may b.u.mp our heads if we sit here."

Tot slipped off the seat at once and stretched himself out on the boards underneath. Dot quickly followed him, and then for a time they lay very still in the darkness, listening to the water as it rippled softly along the sides of the boat.

Presently the girl asked, "Are you frightened, Tot?"

"Not, much," was the hesitating answer; and then, after a long pause, he added, "but some."

"Oh, I'm some frightened myself," said Dot. "But I don't know what we can do."

"I know," declared Tot, solemnly.

"What?" she inquired, in an anxious voice.

"Nuthin'."

Dot saw no need of replying to this, and another long period of silence followed.

They did not seem to be in any immediate danger, for the boat swept along with a free, easy motion that was very pleasant, and the air was delightfully cool after the heat of the sun outside in the open river.

But two things worried Dot. One was the fact that she was being carried a long ways from home, and the other a fear of where the underground river might lead them. She wasn't at all sure they were not floating down into the middle of the earth, and the chances of ever seeing Roselawn again were growing smaller every minute.

Nothing seemed to worry Tot, however. The darkness and the murmuring of the water made him drowsy, and before long he was fast asleep, with his chubby little arms clasped around Dot's neck.

The girl was also gradually recovering from her fright, since nothing terrible seemed to happen. They were having a long journey under the cliffs; but she knew there must come an end to it some time, and probably they would float out of the dark tunnel into the daylight sooner or later.

On and on sped the little boat, until at last, as Dot lay staring into the darkness, she noticed a dim light about her, and began to see the rocky roof of the cavern through which they were pa.s.sing.

Then she sat up, and, far away in the distance, she saw a round, bright spot that reminded her of a full moon. It seemed to be getting nearer and bigger, and finally she gave a cry of joy and awakened her companion.

"Tot! Oh, Tot!" she called. "We've got to the end at last and are coming out of the tunnel!"

Tot sat up and rubbed his eyes. He gave one careless glance at the opening, and then turned his eyes upon the lunch basket, saying, sleepily, "I'm hungry!"

CHAPTER 5 THE WATCH-DOG OF MERRYLAND

Of course, Dot paid no attention, during this exciting moment, to the boy's demand for food.

There would be plenty of time to eat after they were out of the tunnel and in safety.

The boat glided on as gracefully as a swan, and in a few minutes it pa.s.sed through the jagged rocks that formed the mouth of the tunnel and floated into a broad, open river.

Dot and Tot quickly scrambled upon the seat and looked around them.

They were in a deep valley, shaped very much like a chopping bowl, only around the outer edge were high, peaked mountains. Not a tree nor a green thing was to be seen anywhere, but the valley was thickly covered with stones--big stones and little stones and stones of all sizes--scattered about in every direction.

Through the center of the valley ran the broad, blue river, at one end of which was now the boat, while at the other end the children saw a low archway, through which the water seemed to pa.s.s into some country beyond.

Very slowly the boat was floating toward this archway, and Dot decided there would be ample time to eat something from the basket before they had pa.s.sed through the valley of stones.

"We may as well go on, Tot," she said, as she arranged the luncheon; "for this isn't a pleasant place to stop in, and we should never be able to climb over those high mountains."

"Never could," agreed Tot, as he bit into a sandwich.

"What a queer place this is," she continued, looking around them. "I don't believe anyone has ever been here before. Let us give it a name. That's what all explorers do. We'll call it Stony Vale."

"All right," said Tot, contentedly. Then he stretched out his arm and pointed to something that was moving among the stones.

"See!" he said. "Funny man."

"Why, I really believe it is, Tot!" exclaimed the girl, looking toward the place. "No, it isn't a man; it's a bear."

"Bear!" repeated Tot, with wide open eyes. "Funny bear!"

Halfway up the valley they saw a s.h.a.ggy-looking creature sitting upon a rock. It seemed to have the form of a man, as Tot had first declared; but it was covered with long, thick hair, which made Dot decide it must be a bear.

Whatever it was, the creature was surely alive, and it had also seen the boat, for the next moment it rose from the rock and came bounding down to the sh.o.r.e of the river, leaping from stone to stone, and moving so swiftly that its long hair streamed out behind it in the wind.

The boat was now being carried by the current directly toward the sh.o.r.e, and soon its front end touched softly upon the gravelly beach.

At the same time the strange creature drew closer to them and sat down upon a big stone only a few feet away.

Dot and Tot had been watching it, and now saw that what they had taken for a bear was an old man, with whiskers and hair so long that they reached down to the soles of his feet, and probably would have grown still longer had not the rough stones worn away the ends of the hair. Not a bit of his body could be seen; the flowing white hair covered him everywhere like a gown, except upon the top of his head, which was smooth and bald. So thick, indeed, was the covering that when he stretched out his arms, the old man could only push his hands and wrists through the ma.s.ses of hair.

The curious appearance of this strange person surprised the children, and they remained for some time staring at him without trying to say a word.