Hiding of Valinor
Event Type: General
Age: Time of the Trees
Also called Nurtalë Valinóreva.
"But seeing the assault upon Tilion the Valar were in doubt, fearing what the malice and cunning of Morgoth might yet contrive against them. Being unwilling to make war upon him in Middle-earth, they remembered nonetheless the ruin of Almaren; and they resolved that the like should not befall Valinor. Therefore at that time they fortified their land anew, and they raised up the mountain-walls of the Pelóri to sheer and dreadful heights, east, north, and south...But in the Calacirya they set strong towers and many sentinels, and at its issue upon the plains of Valmar a host was encamped, so that neither bird nor beast nor elf nor man, nor any creature beside that dwelt in Middle-earth, could pass that leaguer.
"And in that time also, which songs call Nurtalë Valinóreva, the Hiding of Valinor, the Enchanted Isles were set, and ail the seas about them were filled with shadows and bewilderment.
"Thus it was that as Mandos foretold to them in Araman the Blessed Realm was shut against the Noldor; and of the many messengers that in after days sailed into the West none came ever to Valinor - save one only: the mightiest mariner of song."
The Silmarillion, Ch 11, Of the Sun and Moon and the Hiding of Valinor
Date from Morgoth's Ring Annals of Aman