Bellowing roars came from higher up the ravine. The two hunters bounded back up the slope. Down the ravine came another female, followed by a fourteen-year-old boy. Contemptuous of their assailants, the hunters betrayed their whereabouts with shouts. The female accepted the challenge and climbed heavily up the slope toward them, the boy trailing her and aping her cries with shrill shouts.
The hunters allowed her to approach to within a few yards before they threw their combined weight on a huge mass of rock. The boulder gave and thundered down the slope. It brushed past the female but did not strike her.
"Higher up and try again, Invar!" cried the Chief Hunter.
They bounded up the slope. Anak paused and hurled a flint throwing-stone with deadly aim. It struck the female a glancing blow on the face, tearing the flesh from one of the prominent brow ridges. She stopped, momentarily blinded. Invar raised a rock high above his head with both hands and cast it at her. It struck her on the chest and she fell backwards. Again Anak's strategy was successful and an avalanche of rolled rocks overwhelmed her. The boy turned to fly, but the fleet-footed Invar overtook him and the knives of the two hunters quickly put an end to his career.
As they bent over his dead body, a shrill scream rose on the air. It was not the voice of an apeman, or an apewoman, but held a human quality. The hunters straightened up and sought the source of it. Again came the scream. From the mouth of a cave above them bounded a girl. She won momentarily to freedom, but a huge Neanderthal male followed her from the cave. His hairy arm seized and dragged her back.
"Una!" cried Invar and Anak in one voice.
Forgotten were strategy and tactics. Anak bounded up the slope, Invar at his heels. Into the mouth of the cave they charged. The huge male dropped the girl and faced them with a growl. Anak hurled a throwing-stone, but his aim was poor. It rebounded harmlessly from the great arched chest of the Neanderthaler. With a roar, the apeman charged.
The hunter sidestepped the rush and swung his smiting-stone. The blow was deflected by the upraised arm of the apeman and fell on his shoulder. Invar hurled a throwing-stone which found the monster's face and made him pause. The apeman recovered himself and rushed at the youth. The boy met him, smiting-stone in hand, but one swing of the heavier flint broke through his guard and stretched him senseless on the floor, blood flowing from a gash in his head.
Anak hurled another throwing-stone which caught the apeman on the back of the head, dazing him. With a shout, Anak closed. The effects of the blow had been only momentary and the Neanderthaler met his rush with both his stones swinging. One of them tore a long gash down Anak's back while the other laid open his thigh. The apeman dropped his stones and wound his long hairy arms about the hunter's body. Anak threw himself back and the two rolled on the floor, the apeman striving to crush the life out of his slighter opponent, while Anak smote futilely with his smiting-stone at the hairy body. Slowly, the hunter's ribs gave under the pressure. Spots of fire danced before his eyes. He strove valiantly, but his muscles were as a child's, compared to the enormous development of his opponent. With a gasp, his body went limp.