The Silmarillion

In all the days of the Third Age, after the fall of Gil-galad, Master Elrond abode in Imladris, and he gathered there many Elves, and other folk of wisdom and power from among all the kindreds of Middle-earth, and he preserved through many lives of Men the memory of all that had been fair; and the house of Elrond was a refuge for the weary and the oppressed, and a treasury of good counsel and wise lore. In that house were harboured the Heirs of Isildur, in childhood and old age, because of the kinship of their blood with Elrond himself, and because he knew in his wisdom that one should come of their line to whom a great part was appointed in the last deeds of that Age. And until that time came the shards of Elendil’s sword were given into the keeping of Elrond, when the days of the Dúnedain darkened and they became a wandering people.

In Eriador Imladris was the chief dwelling of the High Elves; but at the Grey Havens of Lindon there abode also a remnant of the people of Gil-galad the Elvenking. At times they would wander into the lands of Eriador, but for the most part they dwelt near the shores of the sea, building and tending the elven-ships wherein those of the Firstborn who grew weary of the world set sail into the uttermost West Círdan the Shipwright was lord of the Havens and mighty among the Wise.

Of the Three Rings that the Elves had preserved unsullied no open word was ever spoken among the Wise, and few even of the Eldar knew where they were bestowed. Yet after the fall of Sauron their power was ever at work, and where they abode there mirth also dwelt and all things were unstained by the griefs of time. Therefore ere the Third Age was ended the Elves perceived that the Ring of Sapphire was with Elrond, in the fair valley of Rivendell, upon whose house the stars of heaven most brightly shone; whereas the Ring of Adamant was in the Land of Lórien where dwelt the Lady Galadriel. A queen she was of the woodland Elves, the wife of Celeborn of Doriath, yet she herself was of the Noldor and remembered the Day before days in Valinor, and she was the mightiest and fairest of all the Elves that remained in Middle-earth. But the Red Ring remained hidden until the end, and none save Elrond and Galadriel and Círdan knew to whom it had been committed.

Thus it was that in two domains the bliss and beauty of the Elves remained still undiminished while that Age endured: in Imladris; and in Lothlórien, the hidden land between Celebrant and Anduin, where the trees bore flowers of gold and no Orc or evil thing dared ever come. Yet many voices were heard among the Elves foreboding that, if Sauron should come again, then either he would find the Ruling Ring that was lost, or at the best his enemies would discover it and destroy it; but in either chance the powers of the Three must then fail and all things maintained by them must fade, and so the Elves should pass into the twilight and the Dominion of Men begin.

And so indeed it has since befallen: the One and the Seven and the Nine are destroyed; and the Three have passed away, and with them the Third Age is ended, and the Tales of the Eldar in Middle-earth draw to then-close. Those were the Fading Years, and in them the last flowering of the Elves east of the Sea came to its winter. In that time the Noldor walked still in the Hither Lands, mightiest and fairest of the children of the world, and their tongues were still heard by mortal ears. Many things of beauty and wonder remained on earth in that time, and many things also of evil and dread: Orcs there were and trolls and dragons and fell beasts, and strange creatures old and wise in the woods whose names are forgotten; Dwarves still laboured in the hills and wrought with patient craft works of metal and stone that none now can rival. But the Dominion of Men was preparing and all things were changing, until at last the Dark Lord arose in Mirkwood again.

Now of old the name of that forest was Greenwood the Great, and its wide halls and aisles were the haunt of many beasts and of birds of bright song; and there was the realm of King Thranduil under the oak and the beech. But after many years, when well nigh a third of that age of the world had passed, a darkness crept slowly through the wood from the southward, and fear walked there in shadowy glades; fell beasts came hunting, and cruel and evil creatures laid there their snares.