On the morrow the Sage led them straight into the rock-sea whereas it seemed to them at first that he was but bringing them into a blind alley; but at the end of the bight the rock-wall was broken down into a long scree of black stones. There the Sage bade Ralph and Ursula dismount (as for him he had been going afoot ever since that first day) and they led the horses up the said scree, which was a hard business, as they were no mountain beasts. And when they were atop of the scree it was harder yet to get them down, for on that side it was steeper; but at last they brought it about, and came down into a little grassy plain or isle in the rock sea, which narrowed toward the eastern end, and the rocks on either side were smooth and glossy, as if the heat had gone out of them suddenly, when the earth-fires had ceased in the mountains.
Now the Sage showed them on a certain rock a sign cut, whereof they had learned in the book aforesaid, to wit, a sword crossed by a three-leaved bough; and they knew by the book that they should press on through the rock-sea nowhere, either going or returning, save where they should see this token.
Now when they came to the narrow end of the plain they found still a wide way between the rock-walls, that whiles widened out, and whiles drew in again. Whiles withal were screes across the path, and little waters that ran out of the lava and into it again, and great blocks of fallen stone, sometimes as big as a husbandman's cot, that wind and weather had rent from the rocks; and all these things stayed them somewhat. But they went on merrily, albeit their road winded so much, that the Sage told them, when evening was, that for their diligence they had but come a few short miles as the crow flies.
Many wild things there were, both beast and fowl, in these islands and bridges of the rock-sea, hares and conies to wit, a many, and heathfowl, and here and there a red fox lurking about the crannies of the rock-wall. Ralph shot a brace of conies with his Turk bow, and whereas there were bushes growing in the chinks, and no lack of whin and ling, they had firing enough, and supped off this venison of the rocks.
So passed that day and two days more, and naught befell, save that on the midnight of the first day of their wending the rock-sea, Ralph awoke and saw the sky all ablaze with other light than that of the moon; so he arose and went hastily to the Sage, and took him by the shoulder, and bid him awake; "For meseems the sky is afire, and perchance the foe is upon us."