The Silmarillion

And in that time was made for him the Nauglamir, the Necklace of the Dwarves, most renowned of their works in the Elder Days. It was a carcanet of gold, and set therein were gems uncounted from Valinor; but it had a power within it so that it rested lightly on its wearer as a strand of flax, and whatsoever neck it clasped it sat always with grace and loveliness.

There in Nargothrond Finrod made his home with many of his people, and he was named in the tongue of the Dwarves Felagund, Hewer of Caves; and that name he bore thereafter until his end. But Finrod Felagund was not the first to dwell m the caves beside the River Narog.

Galadriel his sister went not with him to Nargothrond, for in Doriath dwelt Celeborn, kinsman of Thingol, and there was great love between them. Therefore she remained in the Hidden Kingdom, and abode with Melian, and of her learned great lore and wisdom concerning Middle-earth.

But Turgon remembered the city set upon a hill, Tirion the fair with its tower and tree, and he found not what he sought, but returned to Nevrast, and sat in peace in Vinyamar by the shores of the sea. And in the next year Ulmo himself appeared to him, and bade him go forth again alone into the Vale of Sirion; and Turgon went forth, and by the guidance of Ulmo he discovered the hidden vale of Tumladen in the Encircling Mountains, in the midst of which there was a hill of stone. Of this he spoke to none as yet, but returned once more to Nevrast, and there began in his secret counsels to devise the plan of a city after the manner of Tirion upon Tuna, for which his heart yearned in exile.  Now Morgoth, believing the report of his spies that the lords of the Noldor were wandering abroad with little thought of war, made trial of the strength and watchfulness of his enemies. Once more, with little warning, his might was stirred, and suddenly there were earthquakes in the north, and fire came from fissures in the earth, and the Iron Mountains vomited flame; and Orcs poured forth across the plain of Ard-galen. Thence they thrust down the Pass of Sirion in the west, and in the east they burst through the land of Maglor, in the gap between the hills of Maedhros and the outliers of the Blue Mountains. But Fingolfin and Maedhros were not sleeping, and while others sought out the scattered bands of Orcs that strayed in Beleriand did great evil they came upon the main host from either side as it was assaulting Dorthonion; and they defeated the servants of Morgoth, and pursuing them across Ard-galen destroyed them utterly, to the least and last, within sight of Angband's gates. That was the third great battle of the Wars of Beleriand, and it was named Dagor Aglareb, the Glorious Battle.

A victory it was, and yet a warning; and the princes took heed of it, and thereafter drew closer their leaguer, and strengthened and ordered their watch, setting the Siege of Angband. which lasted wellnigh four hundred years of the Sun. For a long time after Dagor Aglareb no servant of Morgoth would venture from his gates, for they feared the lords of the Noldor; and Fingolfin boasted that save by treason among themselves Morgoth could never again burst from the leaguer of the Eldar, nor come upon them at unawares. Yet the Noldor could not capture Angband, nor could they regain the Silmarils; and war never wholly ceased in all that time of the Siege, for Morgoth devised new evils, and ever and anon he would make trial of his enemies. Nor could the stronghold of Morgoth be ever wholly encircled: for the Iron Mountains, from whose great curving wall the towers of Thangorodrim were thrust forward, defended it upon either side, and were impassable to the Noldor, because of their snow and ice. Thus in his rear and to the north Morgoth had no foes, and by that way his spies at times went out, and came by devious routes into Beleriand. And desiring above all to sow fear and disunion among the Eldar, he commanded the Orcs to take alive any of them that they could and bring them bound to Angband; and some he so daunted by the terror of his eyes that they needed no chains more, but walked ever in fear of him, doing his will wherever they might be. Thus Morgoth learned much of all that had befallen since the rebellion of Feanor, and he rejoiced, seeing therein the seed of many dissensions among his foes.

When nearly one hundred years had run since the Dagor Aglareb, Morgoth endeavoured to take Fingolfin at unawares (for he knew of the vigilance of Maedhros); and he sent forth an army into the white north, and they turned west and again south and came down the coasts to the Firth of Drengist, by the route that Fingolfin followed from the Grinding Ice. Thus they would enter into the realm of Hithlum from the west; but they were espied in time, and Fingon fell upon them among the hills at the head of the Firth, and most of the Orcs were driven into the sea. This was not reckoned among the great battles, for the Orcs were not in great number, and only a part of the people of Hithlum fought there. But thereafter there was peace for many years, and no open assault from Angband, for Morgoth perceived now that the Orcs unaided were no match for the Noldor; and he sought in his heart for new counsel.

Again after a hundred years Glaurung, the first of the Uruloki, the fire-drakes of the North, issued from Angband's gates by night. He was yet young and scarce half-grown, for long and slow is the life of the dragons, but the Elves fled before him to Ered Wethrin and Dorthonion in dismay; and he defiled the fields of Ard-galen. Then Fingon prince of Hithlum rode against him with archers on horseback, and hemmed him round with a ring of swift riders; and Glaurung could not endure their darts, being not yet come to his full armoury, and he fled back to Angband, and came not forth again for many years. Fingon won great praise, and the Noldor rejoiced; for few foresaw the full meaning and threat of this new thing. But Morgoth was ill-pleased that Glaurung had disclosed himself over-soon; and after his defeat there was the Long Peace of wellnigh two hundred years. In all that time there were but affrays on the marches, and all Beleriand prospered and grew rich. Behind the guard of their armies in the north the Noldor built their dwellings and their towers, and many fair things they made in those days, and poems and histories and books of lore. In many parts of the land the Noldor and the Sindar became welded into one people, and spoke the same tongue; though this difference remained between them, that the Noldor had the greater power of mind and body. and were the mightier warriors and sages, and they built with stone, and loved the hill-slopes and open lands. But the Sindar had the fairer voices and were more skilled in music, save only Maglor son of Feanor, and they loved the woods and the riversides; and some of the Grey-elves still wandered far and wide without settled abode, and they sang as they went.

Chapter 14

Of Beleriand and Its Realms This is the fashion of the lands into which the Noldor came, in the north of the western regions of Middle-earth, in the ancient days; and here also is told of the manner in which the chieftains of the Eldar held their lands and the leaguer upon Morgoth after the Dagor Aglareb, the third battle in the Wars of Beleriand.