What had been good fighting before was better now. Lives were lost, and soon all arrows were spent and all spears thrown, and then came but the dull clashing of stone axes. Ab raged up and down, and, ever in the front, faced the oncoming foe and slew as could slay the strong and utterly desperate. More than once his life was but a toy of chance as men sprang toward him, two or three together, but ever at such moment there sang an arrow by his head and one of his assailants, pierced in throat or body, fell back blindly, hampering his companions, whose heads Ab's great ax was seeking fiercely. And, all the time, nearer the northern end of the barrier, old Hilltop fought serenely and dreadfully. There were many dead men in the pools of the creek between the barrier and the entrance to the valley. And about Ab ever sang the arrows from the rocky shelf. There was wild clamor, the clash of weapons and the shouting of battle-crazed men but there was not enough to drown the sound of a scream which rose piercingly above the din. Ab recognized the voice of Lightfoot and raised his eyes to see the woman, regardless of her own safety, standing upright and pointing up the valley. He knew that something meaning life and death was happening and that he must go. He leaped backward and a huge Western cave man sprang to his place, to serve as best he could. Not a moment too soon had that shrill cry reached the ears of the fighting man. He ran backward, shouting to a score of his people to follow him as he ran, and in an instant recognized that he had been outwitted, at least for the moment, by the vengeful Boarface. As he rushed to the east toward the wall of flame he saw a dark form pass through its crest in a flying leap. There were others he knew would follow. His own feat of long ago was being repeated by Boarface and his chosen group of best men! It was not Boarface who leaped and it was hard for a gallant youth of the Eastern cave men that he had strength and daring and had dashed ahead in the assault, for he had scarcely touched the ground when there sank deeply into his head a stone ax, impelled by the strongest arm of all that region, and he was no more among things alive. Ab had reached the fire wall with the speed of a great runner while, close behind him, came his eager following.