A few strong strokes carried them well under the village, and as they forged toward the shore they could hear the searchers running hither and thither above them. The whole community was awake by now, and the din was deafening. As the two crawled from the water to the shore they were instantly discovered by those nearest them, and at once the causeway rattled and groaned beneath the feet of a hundred warriors that sped along it to intercept the flight of the fugitives.
Ahead of them were the dangers of the primeval night; behind them were no less grave dangers at the hands of their savage foes. Unarmed, but for a knife, it was futile to stand and fight. The only hope lay in flight and the chance that they might reach the forest and a sheltering tree before either the human beasts behind them or the beasts of prey before had seized them.
Both Nu and Nat-ul were fleet of foot. Beside them, the Lake Dwellers were sluggards, and consequently five minutes put them far ahead of their pursuers, who, seeing the futility of further pursuit and the danger of being led too far from their dwellings and possibly into a strong camp of enemies, abandoned the chase and returned to the lake.
Fortune favored Nu and Nat-ul, as it is ever credited with favoring the brave. They reached the forest at the edge of the plateau without encountering any of the more formidable carnivora. Here they found sanctuary in a tree where they remained until dawn. Then they resumed their way toward the cliffs which they must scale to reach the sea. The matter of Gron had been settled between them—they would offer to take her with them back to their own people where she might live in safety so long as she chose.
It was daylight when Nu and Nat-ul reached the base of the cliffs. Gron was not in sight. At the summit of the cliff, however, two crafty eyes looked from behind a grassy screen upon them. The watcher saw the man and the maid, and recognized them both. They were ascending—he would wait a bit.
Nu and Nat-ul climbed easily upward. When they had gained about half the distance toward the summit the man, shunning further concealment, started downward to meet them. His awkwardness started a loose stone and appraised them of his presence. Nu looked up, as did Nat-ul.
"Tur!" exclaimed the latter.
"Tur," echoed Nu, and redoubled his efforts to ascend.
"You are unarmed," cautioned Nat-ul, "and he is above. The advantage is all his."
But the cave man was hot to lay hands upon this fellow who had brought upon Nat-ul all the hardships she had suffered. He loosed his knife and carried it between his teeth, ready for instant use. Like a cat he scrambled up the steep ascent. Directly at his heels came his sweet and savage Nat-ul. Between her strong, white teeth was her own knife. Tur was in for a warm reception. He had reached a ledge now just below a cave mouth. Lying loosely upon the cliff side, scarcely balanced there, was a huge rock, a ton or two of potential destruction. Tur espied it. Just below it, directly in its path, climbed Nu and Nat-ul. Tur grasped in an instant the possibilities that lay in the mighty weight of that huge boulder. He leaped behind it, and bracing his feet against it and his back against the cliff, pushed. The boulder leaned and rocked. Nu, realizing the danger, looked to right and left for an avenue of escape, but chance had played well into the hands of the enemy. Just at this point there was no foothold other than directly where they stood. They redoubled their efforts to reach the man before he could dislodge the boulder.