Presently Alan realized that the valley had narrowed to a pit. He stood up. "Hurry! Now we can go after them. Up there!"
The opening above was empty. Polter and I were fighting some distance away....
Dr. Kent was soon large enough to scramble out of the pit. Alan handed the little Babs up to him and followed. Alan saw that they were now in a long gully, blind at one end with a five hundred foot perpendicular cliff. Against the wall, the Titanic form of Polter stood at bay. And I was confronting him. The summit of the cliff was lower than our waists. Triumph swept Alan; he saw that I was the larger! As Polter bored into me my backward step crossed the full width of the gully. Alan shouted:
"Down! Babs—Father!"
They had barely time to flatten themselves in a narrow crevice between upstanding rocks before my foot crashed down. For an instant the sole of my foot formed a flat black ceiling as it spanned the rocks. Then it lifted and was gone with a blurred swoop. They saw the white blur of my hand come down and snatch a tremendous boulder, raising it with a great sweep of movement into the sky. They saw me crash it against Polter; but it only struck his shoulder. He roared with anger. The whole sky was roaring and rumbling with our shouts and our panting breathing, and the ground was clattering, pounding with our giant tread. Huge loose boulders were tumbled in an avalanche everywhere.
Again it seemed to Alan that our lurching, heedlessly surging bodies must be crushed within these contracting walls. Only our locked, intertwined legs were visible; our bodies were lost in the sky. Then it seemed to Alan that I had heaved Polter upward. And followed him. We disappeared. There was a distant overhead rumble, and the murky sky, with vague patches of far-distant illumination in it, became empty of movement....
The walls presently were again closing upon Alan and his companions. They ran out of the open end of the shrinking little gully and came to a new upward vista....
I found myself a full head and shoulders taller than Polter. And he was tiring, panting heavily. His face was cut and bleeding from the blows of my fist. The rock I heaved struck his shoulder. He roared, head down, and bored into me. He was heavier than I. His weight flung me back. My foot slid on the loose stones of the gully floor. I did not know that Babs, Alan and their father were huddled under those stones!
My back struck the opposite wall. Polter's upflung knee caught me in the stomach, all but knocking the breath out of me. He was desperate, oblivious to the closing walls. And as he flung his arms with a grip about my neck, hanging, trying to bear down, I saw in his blazing dark eyes what seemed the light of suicide. I think that then, with a sudden frenzied madness he realized that he was beaten, and tried to pull us to the ground and let the walls crush us.