Sam looked up towards the orc-tower, and suddenly from its narrow windows lights stared out like small red eyes. He wondered if they were some signal. His fear of the orcs, forgotten for a while in his wrath and desperation, now returned. As far as he could see, there was only one possible course for him to take: he must go on and try to find the main entrance to the dreadful tower; but his knees felt weak, and he found that he was trembling. Drawing his eyes down from the tower and the horns of the Cleft before him, he forced his unwilling feet to obey him, and slowly, listening with all his ears, peering into the dense shadows of the rocks beside the way, he retraced his steps, past the place where Frodo fell, and still the stench of Shelob lingered, and then on and up, until he stood again in the very cleft where he had put on the Ring and seen Shagrat's company go by.
There he halted and sat down. For the moment he could drive himself no further. He felt that if once he went beyond the crown of the pass and took one step veritably down into the land of Mordor, that step would be irrevocable. He could never come back. Without any clear purpose he drew out the Ring and put it on again. Immediately he felt the great burden of its weight, and felt afresh, but now more strong and urgent than ever, the malice of the Eye of Mordor, searching, trying to pierce the shadows that it had made for its own defence, but which now hindered it in its unquiet and doubt.
As before, Sam found that his hearing was sharpened, but that to his sight the things of this world seemed thin and vague. The rocky walls of the path were pale, as if seen through a mist, but still at a distance he heard the bubbling of Shelob in her misery: and harsh and clear, and very close it seemed, he heard cries and the clash of metal. He sprang to his feet, and pressed himself against the wall beside the road. He was glad of the Ring, for here was yet another company of orcs on the march. Or so at first he thought. Then suddenly he realized that it was not so, his hearing had deceived him: the orc-cries came from the tower, whose topmost horn was now right above him, on the left hand of the Cleft.
Sam shuddered and tried to force himself to move. There was plainly some devilry going on. Perhaps in spite of all orders the cruelty of the orcs had mastered them, and they were tormenting Frodo, or even savagely hacking him to pieces. He listened; and as he did a gleam of hope came to him. There could not be much doubt: there was fighting in the tower, the orcs must be at war among themselves, Shagrat and Gorbag had come to blows. Faint as was the hope that his guess brought him, it was enough to rouse him. There might be just a chance. His love for Frodo rose above all other thoughts, and forgetting his peril he cried aloud: 'I'm coming, Mr. Frodo!'
He ran forward to the climbing path, and over it. At once the road turned left and plunged steeply down. Sam had crossed into Mordor.
He took off the Ring, moved it may be by some deep premonition of danger, though to himself he thought only that he wished to see more clearly. 'Better have a look at the worst,' he muttered. 'No good blundering about in a fog!'
Hard and cruel and bitter was the land that met his gaze. Before his feet the highest ridge of the Ephel Duath fell steeply in great cliffs down into a dark trough, on the further side of which there rose another ridge, much lower, its edge notched and jagged with crags like fangs that stood out black against the red light behind them: it was the grim Morgai, the inner ring of the fences of the land. Far beyond it, but almost straight ahead, across a wide lake of darkness dotted with tiny fires, there was a great burning glow; and from it rose in huge columns a swirling smoke, dusty red at the roots, black above where it merged into the billowing canopy that roofed in all the accursed land.
Sam was looking at Orodruin, the Mountain of Fire. Ever and anon the furnaces far below its ashen cone would grow hot and with a great surging and throbbing pour forth rivers of molten rock from chasms in its sides. Some would flow blazing towards Barad-dur down great channels; some would wind their way into the stony plain, until they cooled and lay like twisted dragon-shapes vomited from the tormented earth. In such an hour of labour Sam beheld Mount Doom, and the light of it, cut off by the high screen of the Ephel Duath from those who climbed up the path from the West, now glared against the stark rock faces, so that they seemed to be drenched with blood.