In time the hosts of the Vanyar and the Noldor came to the last western shores of the Hither Lands. In the north these shores, in the ancient days after the Battle of the Powers, bent ever westward, until in the northernmost parts of Arda only a narrow sea divided Aman, upon which Valinor was built, from the Hither Lands; but this narrow sea was filled with grinding ice, because of the violence of the frosts of Melkor. Therefore Oromë did not lead the hosts of the Eldalië into the far north, but brought them to the fair lands about the River Sirion, that afterwards were named Beleriand; and from those shores whence first the Eldar looked in fear and wonder on the Sea there stretched an ocean, wide and dark and deep, between them and the Mountains of Aman.
Now the Three Kindreds of the Eldar were gathered at last in Valinor, and Melkor was chained. This was the Noontide of the Blessed Realm, the fullness of its glory and its bliss, long in tale of years, but in memory too brief. In those days the Eldar became full-grown in stature of body and of mind, and the Noldor advanced ever in skill and knowledge; and the long years were filled with their joyful labours, in which many new things fair and wonderful were devised. Then it was that the Noldor first bethought them of letters, and Rúmil of Tirion was the name of the loremaster who first achieved fitting signs for the recording of speech and song, some for graving upon metal or in stone, others for drawing with brush or with pen.
In that time were made those things that afterwards were most renowned of all the works of the Elves. For Fëanor,
being come to his full might, was filled with a new thought, or it may be that some shadow of foreknowledge came to
him of the doom that drew near; and he pondered how the light of the Trees, the glory of the Blessed Realm, might be
preserved imperishable. Then he began a long and secret labour, and he summoned all his lore, and his power, and his
subtle skill; and at the end of all he made the Silmarils.