Thus began the Third Age of the World, after the Eldest Days and the Black Years; and there was still hope in that time and the memory of mirth, and for long the White Tree of the Eldar flowered in the courts of the Kings of Men, for the seedling which he had saved Isildur planted in the citadel of Anor in memory of his brother, ere he departed from Gondor. The servants of Sauron were routed and dispersed, yet they were not wholly destroyed; and though many Men turned now from evil and became subject to the heirs of Elendil, yet many more remembered Sauron in their hearts and hated the kingdoms of the West. The Dark Tower was levelled to the ground, yet its foundations remained, and it was not forgotten. The Numenoreans indeed set a guard upon the land of Mordor, but none dared dwell there because of the terror of the memory of Sauron, and because of the Mountain of Fire that stood nigh to Barad-dur; and the valley of Gorgoroth was filled with ash. Many of the Elves and many of the Numenoreans and of Men who were their allies had perished in the Battle and the Siege; and Elendil the Tall and Gil-galad the High King were no more.
Never again was such a host assembled, nor was there any such league of Elves and Men; for after Elendil's day the two kindreds became estranged.
The Ruling Ring passed out of the knowledge even of the Wise in that age; yet it was not unmade. For Isildur would not surrender it to Elrond and Cirdan who stood by. They counselled him to cast it into the fire of Orodruin nigh at hand, in which it had been forged, so that it should perish, and the power of Sauron be for ever diminished, and he should remain only as a shadow of malice in the wilderness. But Isildur refused this counsel, saying: 'This I will have as were-gild for my father's death, and my brothers. Was it not I that dealt the Enemy his death-blow?' And the Ring that he held seemed to him exceedingly fair to look on; and he would not suffer it to be destroyed. Taking it therefore he returned at first to Minas Anor, and there planted the White Tree in memory of his brother Anarion. But soon he departed, and after he had given counsel to Meneldil, his brother's son, and had committed to him the realm of the south, he bore away the Ring, to be an heirloom of his house, and marched north from Gondor by the way that Elendil had come; and he forsook the South Kingdom, for he purposed to take up his father's realm in Eriador, far from the shadow of the Black Land.
But Isildur was overwhelmed by a host of Orcs that lay in wait in the Misty Mountains; and they descended upon him at unawares in his camp between the Greenwood and the Great River, nigh to Loeg Ningloron, the Gladden Fields, for he was heedless and set no guard, deeming that all his foes were overthrown. There well nigh all his people were slain, and among them were his three elder sons, Elendur, Aratan, and Ciryon; but his wife and his youngest son, Valandil, he had left in Imladris when he went to the war. Isildur himself escaped by means of the Ring, for when he wore it he was invisible to all eyes; but the Orcs hunted him by scent and slot, until he came to the River and plunged in. There the Ring betrayed him and avenged its maker, for it slipped from his finger as he swam, and it was lost in the water. Then the Orcs saw him as he laboured in the stream, and they shot him with many arrows, and that was his end.
Only three of his people came ever back over the mountains after long wandering; and of these one was Ohtar his esquire, to whose keeping he had given the shards of the sword of Elendil.
Thus Narsil came in due time to the hand of Valandil, Isildur's heir, in Imladris; but the blade was broken and its light was extinguished, and it was not forged anew. And Master Elrond foretold that this would not be done until the Ruling Ring should be found again and Sauron should return; but the hope of Elves and Men was that these things might never come to pass.
Valandil took up his abode in Annuminas, but his folk were diminished, and of the Numenoreans and of the Men of Eriador there remained now too few to people the land or to maintain all the places that Elendil had built; in Dagorlad, and in Mordor, and upon the Gladden Fields many had fallen. And it came to pass after the days of Earendur, the seventh king that followed Valandil, that the Men of Westernesse, the Dunedain of the North, became divided into petty realms and lordships, and their foes devoured them one by one. Ever they dwindled with the years, until their glory passed, leaving only green mounds in the grass. At length naught was left of them but a strange people wandering secretly in the wild, and other men knew not their homes nor the purpose of their journeys, and save in Imladris, in the house of Elrond, their ancestry was forgotten. Yet the shards of the sword were cherished during many lives of Men by the heirs of Isildur; and their line, from father to son, remained unbroken.
In the south the realm of Gondor endured, and for a time its splendour grew, until it recalled the wealth and majesty of Numenor ere it fell High towers the people of Gondor built, and strong places, and havens of many ships; and the Winged Crown of the Kings of Men was held in awe by people of many lands and tongues. For many a year the White Tree grew before the King's house in Minas Anor, the seed of that tree which Isildur brought out of the deeps of the sea from Numenor; and the seed before that came from Avallone, and before that from Valinor in the Day before days when the world was young. Yet at the last, in the wearing of the swift years of Middle-earth, Gondor waned, and the line of Meneldil son of Anarion failed. For the blood of the Numenoreans became much mingled with that of other men, and their power and wisdom was diminished, and their life-span was shortened, and the watch upon Mordor slumbered. And in the days of Telemnar, the third and twentieth of the line of Meneldil, a plague came upon dark winds out of the east, and it smote the King and his children, and many of the people of Gondor perished. Then the forts on the borders of Mordor were deserted, and Minas Ithil was emptied of its people; and evil entered again into the Black Land secretly, and the ashes of Gorgoroth were stirred as by a cold wind, for dark shapes gathered there. It is said that these were indeed the Ulairi, whom Sauron called the Nazgul, the Nine Ringwraiths that had long remained hidden, but returned now to prepare the ways of their Master, for he had begun to grow again.
And in the days of Earnil they made their first stroke, and they came by night out of Mordor over the passes of the Mountains of Shadow, and took Minas Ithil for their abode; and they made it a place of such dread that none dared to look upon it. Thereafter it was called Minas Morgul, the Tower of Sorcery; and Minas Morgul was ever at war with Minas Anor in the west. Then Osgiliath, which in the waning of the people had long been deserted, became a place of ruins and a city of ghosts. But Minas Anor endured, and it was named anew Minas Tirith, the Tower of Guard; for there the kings caused to be built in the citadel a white tower, very tall and fair, and its eye was upon many lands. Proud still and strong was that city, and in it the White Tree still flowered for a while before the house of the Kings; and there the remnant of the Numenoreans still defended the passage of the River against the terrors of Minas Morgul and against all the enemies of the West, Orcs and monsters and evil Men; and thus the lands behind them, west of Anduin, were protected from war and destruction.