Amroth drew me back into the tower, and motioned me to the next balcony. Again I went out. The sight that I saw was almost more terrible than the first, because the prisoner here, penned in a similar enclosure, was more restless, and seemed to suffer more acutely. This was a younger man, who walked swiftly and vaguely about, casting glances up at the wall which enclosed him. Sometimes he stopped, and seemed to be pursuing some dreadful train of solitary thought; he gesticulated, and even broke out into mutterings and cries--the cries that I had heard from without. I could not bear to look at this sight, and coming back, besought Amroth to lead me away. Amroth, who was himself, I perceived, deeply moved, and stood with lips compressed, nodded in token of assent. We went quickly down the stairway, and took our way up the hill among the stones, in silence. The shapes of similar enclosures were to be seen everywhere, and the indescribable blankness and grimness of the scene struck a chill to my heart. From the top of the ridge we could see the same bare valleys stretching in all directions, as far as the eye could see. The only other building in sight was a great circular tower of stone, far down in the valley, from which beat the pulse of some heavy machinery, which gave the sense, I do not know how, of a ghastly and watchful life at the centre of all. "That is the Tower of Pain," said Amroth, "and I will spare you the inner sight of that. Only our very bravest and strongest can enter there and preserve any hope. But it is well for you to know it is there, and that souls have to enter it. It is thence that all the pain of countless worlds emanates and vibrates, and the governor of the place is the most tried and bravest of all the servants of God. Thither we must go, for you shall have sight of him, though you shall not enter." We went down the hill with all the speed we might, and, I will confess it, with the darkest dismay I have ever experienced tugging at my heart. We were soon at the foot of the enormous structure. Amroth knocked at the gate, a low door, adorned with some vague and ghastly sculptures, things like worms and huddled forms drearily intertwined. The door opened, and revealed a fiery and smouldering light within. High up in the tower a great wheel whizzed and shivered, and moving shadows crossed and recrossed the firelit walls.