of the darkening of Valinor 8

sumup: Darkness fell then on Valinor. The darkness—being made from the destruction of light—was malicious and all sight, sound, and will were lost. Manwë knew that it was the work of Melkor and Oromë and Tulkas set forth in pursuit of him, but they were lost amid the blindness and confusion of the darkness put forth by Ungoliant.