At last, when he had gone thus more than two miles from where he first hit the water, a long straight reach lay before him, and as he looked down it, it seemed as if the river came presently to an end; but in sooth there was a sharp turn to the east by which the water ran, but narrowing much; and this narrowing was made by the thrusting forth of the western bank into a sharp ness, which, from where Osberne now stood, showed a wide flank facing, as it seemed, the whole hurrying stream of the Flood. But the stream turned ere it smote the cliff, and striving for the narrow outgate made a prodigious eddy or whirlpool ere it might clear itself of the under-water foot of the ness and make eastward so as to rush on toward the sea. But in the face of the wall, in the bight where the whirlpool turned from it, was a cave the height of a tall man, and some four feet athwart, and below it a ledge thrust out from the sheer rock and hanging over the terrible water, and it was but a yard wide or so. It was but ten feet above the water, and from it to the grass above must have been a matter of forty foot. But the ness as it thrust forth into the river rose also, so that its crest was a score of feet higher where it went down into the water than its base amidst the green grass. Then came the strait passage of the water, some thirty feet across, and then the bank of the eastern side, which, though it thrust out not, but rather was as it were driven back by the stream, yet it rose toward the water, though not so much as the ness over against it. It was as if some one had cast down a knoll across the Sundering Flood, and the stream had washed away the sloped side thereof, and then had sheared its way through by the east side where the ground was the softest. Forsooth so it seemed to the Dalesmen, for on either side they called it the Bight of the Cloven Knoll. Osberne stood amazed right over against the cave in the cliff-side, and stared at the boiling waters beneath him, that seemed mighty enough to have made a hole in the ship of the world and sunk it in the deep. And he wondered at the cave, whether it was there by chance hap, or that some hands had wrought it for an habitation.