§ Of the Coming of the Elves and the Captivity of Melkor The Silmarillion

At length the Vanyar and the Noldor came over Ered Luin, the Blue Mountains, between Eriador and the westernmost land of Middle-earth, which the Elves after named Beleriand; and the foremost companies passed over the Vale of Sirion and came down to the shores of the Great Sea between Drengist and the Bay of Balar. But when they beheld it great fear came upon them, and many withdrew into the woods and highlands of Beleriand. Then Oromë departed, and returned to Valinor to seek the counsel of Manwë, and left them.