Read LOTR Aloud: Book 3, Chapter 8, The Road to Isengard
'And glad shall I be to see it again,' said Théoden, 'though brief now, I doubt not, shall be my abiding there.'
With that the company said farewell to the island and the mound, and passed over the river, and climbed the further bank. Then they rode on, glad to have left the mournful Fords. As they went the howling of the wolves broke out anew.
There was an ancient highway that ran down from Isengard to the crossings. For some way it took its course beside the river, bending with it east and then north; but at the last it turned away and went straight towards the gates of Isengard; and these were under the mountain-side in the west of the valley, sixteen miles or more from its mouth. This road they followed but they did not ride upon it; for the ground beside it was firm and level, covered for many miles about with short springing turf. They rode now more swiftly, and by midnight the Fords were nearly five leagues behind. Then they halted, ending their night's journey, for the King was weary. They were come to the feet of the Misty Mountains, and the long arms of Nan Curunír stretched down to meet them. Dark lay the vale before them, for the moon had passed into the West, and its light was hidden by the hills. But out of the deep shadow of the dale rose a vast spire of smoke and vapour; as it mounted, it caught the rays of the sinking moon, and spread in shimmering billows, black and silver, over the starry sky.
'What do you think of that, Gandalf?' asked Aragorn. 'One would say that all the Wizard's Vale was burning.'
'There is ever a fume above that valley in these days,' said Éomer: 'but I have never seen aught like this before. These are steams rather than smokes. Saruman is brewing some devilry to greet us. Maybe he is boiling all the waters of Isen, and that is why the river runs dry.'
'Maybe he is,' said Gandalf. 'Tomorrow we shall learn what he is doing. Now let us rest for a while, if we can.'
They camped beside the bed of the Isen river; it was still silent and empty. Some of them slept a little. But late in the night the watchmen cried out, and all awoke. The moon was gone. Stars were shining above; but over the ground there crept a darkness blacker than the night. On both sides of the river it rolled towards them, going northward.
'Stay where you are!' said Gandalf. 'Draw no weapons! Wait! and it will pass you by!'
A mist gathered about them. Above them a few stars still glimmered faintly; but on either side there arose walls of impenetrable gloom; they were in a narrow lane between moving towers of shadow. Voices they heard, whisperings and groanings and an endless rustling sigh; the earth shook under them. Long it seemed to them that they sat and were afraid; but at last the darkness and the rumour passed, and vanished between the mountain's arms.
Away south upon the Hornburg, in the middle night men heard a great noise, as a wind in the valley, and the ground trembled; and all were afraid and no one ventured to go forth. But in the morning they went out and were amazed; for the slain Orcs were gone, and the trees also. Far down into the valley of the Deep the grass was crushed and trampled brown, as if giant herdsmen had pastured great droves of cattle there; but a mile below the Dike a huge pit had been delved in the earth, and over it stones were piled into a hill. Men believed that the Orcs whom they had slain were buried there; but whether those who had fled into the wood were with them, none could say, for no man ever set foot upon that hill. The Death Down it was afterwards called, and no grass would grow there. But the strange trees were never seen in Deeping-coomb again; they had returned at night, and had gone far away to the dark dales of Fangorn. Thus they were revenged upon the Orcs.