Tur redoubled his efforts to start it spinning down upon them. He changed his position, placing his shoulder against the rock and one hand and foot against the cliff. Thus he pushed frantically. The hideous menace to those below it swayed and rocked. Another moment and it would topple downward.
Presently from the cave behind Tur a woman emerged, awakened by the noises from without. It was Gron. She took in the whole scene in a single glance. She saw Nu and with him Nat-ul. The man she loved with the woman who stood between them, who must always stand between them, for she realized that Nu would never love her, whether Nat-ul were alive or dead.
She smiled as she saw success about to crown the efforts of Tur. In another instant the man who scorned her love and the woman she hated with all the power of her savage jealousy would be hurled, crushed and mangled, to the bottom of the cliff.
Tur! She watched her mate with suddenly narrowing eyes. Tur! He struck her! He repudiated her! A flush of shame scorched her cheek. Tur! Her mate. The father of her child!
The rock toppled. Nu and Nat-ul from below were clambering upward. The man had seen Gron, but he had read her emotions clearly. No use to call upon her for help. Out of the past the old love for her true mate had sprung to claim her. She would cleave to Tur in the moment of his victory, hoping thus to win him back. Nor was Nu insensible to the power of hatred which he might have engendered in the woman's breast by repulsing her demonstrations of love.
Another push like the last and the boulder would lunge down upon them. Gron stood with her hands clutching her naked breasts, the nails buried in the soft flesh until blood trickled down the bronze skin. The father of her child. Her child! The pitiful thing that she deserted within the shelter by the beach! Her baby—her dead baby! Dead because of Tur and his cruelty toward her.
Tur braced himself for the final push. A smile curled his lip. His back was toward Gron—otherwise he would not have smiled. Even Nu did not smile at the thing he saw above him—the face of a woman made hideous by hate and blood-lust. With bared knife Gron leaped toward Tur. The upraised knife buried itself in his back and chest. With a scream he turned toward the avenger. As his eyes rested upon the face of the mother of his child, he shrieked aloud, and with the shriek still upon his lips he sank to the ledge, dead.
Then Gron turned to face the two who were rapidly ascending toward her. Words of thanks were already upon Nu's lips; but Gron stood silent, ready to meet them—with bared knife. What would she do? Nu and Nat-ul wondered, but there was no retreat and only a knife-armed woman barred their way to liberty and home.
Nu was almost level with her. Gron raised her knife above her head. Nu sprang upward to strike the weapon to one side before it was buried in his breast; but Gron was too quick for him. The blade fell, but not upon Nu. Deep into her own broken heart Gron plunged the sharp point, and at the same instant she leaped far beyond Nu and Nat-ul to crash, mangled and broken at the foot of the lofty cliff.
Death, sudden and horrible, was no stranger to these primeval lovers. They saw that Gron was dead, and Tur, likewise. Nu appropriated the latter's weapons, and side by side the two set out to find the beach. They found it with only such delays and dangers as were daily incidents in their savage lives. They found the boat, too, and reached the mainland and, later, the cliffs and their tribe, in safety. Here they found a wild welcome awaiting them, for both had been given up as dead.