Thus then through the wind-borne drift of the great force, through which men could see the white waters tossing down below, amidst the clattering thunder of the Shivering Flood and the rumble of the wind of the gap, that tore through their garments and hair as if it would rend all to rags and bear it away, the banners of the Wolf won their way to the crest of the midmost height of the pass, and the long line of the Host came clambering after them; and each band of warriors as it reached the top cast an unheard shout from amidst the tangled fury of wind and waters. A little further on and all that turmoil was behind them; the sun, now grown low, smote the wavering column of spray from the force at their backs, till the rainbows lay bright across it; and the sunshine lay wide over a little valley that sloped somewhat steeply to the west right up from the edge of the river; and beyond these western slopes could men see a low peak spreading down on all sides to the plain, till it was like to a bossed shield, and the name of it was Shield-broad. Dark grey was the valley everywhere, save that by the side of the water was a space of bright green-sward hedged about toward the mountain by a wall of rocks tossed up into wild shapes of spires and jagged points. The river itself was spread out wide and shallow, and went rattling about great grey rocks scattered here and there amidst it, till it gathered itself together to tumble headlong over three slant steps into the mighty gap below. From the height in the pass those grey slopes seemed easy to traverse; but the warriors of the Wolf knew that it was far otherwise, for they were but the molten rock-sea that in time long past had flowed forth from Shield-broad and filled up the whole valley endlong and overthwart, cooling as it flowed, and the tumbled hedge of rock round about the green plain by the river was where the said rock-sea had been stayed by meeting with soft ground, and had heaped itself up round about the green-sward. And that great rock-flood as it cooled split in divers fashions; and the rain and weather had been busy on it for ages, so that it was worn into a maze of narrow paths, most of which, after a little, brought the wayfarer to a dead stop, or else led him back again to the place whence he had started; so that only those who knew the passes throughly could thread that maze without immeasurable labour.