Act I, Part XVI: Songs of Lament
It was not the last time that Tinnurion would venture into Beleriand. Not long after his failed attempt at retrieving the sword of Eöl, word reached his ear that there was conflict between the Dwarves of Nogrod and the Elves of Doriath. At the city of the Dwarves he learned that Thingol had died and that King Naugladur lead a great host into Doriath to take vengeance upon the Elves and Tinnurion grieved at the hearing of it. For much he hated the sorrows of war, but the thought of Dwarves and Elves fighting each other he could not bear and so great was his fear of what was to come that he sat silent for many days upon an outcropping of the slopes of the mountain, waiting for their return, and not even the sun could persuade him to do otherwise.
Then as if waking from a dream he heard the sound of elven-horns in the distance. A great battle was taking place somewhere out of sight. Tinnurion followed the echoes of battle until at last all was silent and he walked among the dead; Dwarves and Elves in great number. Tinnurion despaired and for a good long while the world seemed strange and unwelcoming to him. Even the light of the stars and the blanket of night could not bring his aching heart to rest. Darkness took his mind and he wandered without pause and without purpose under the whispering trees of Taur-im-Duinath.
Years passed till the day he heard sweet voices sing a tune he never heard before and it swept him off his feet and lured him towards them. It were the refugees of the secret city of Gondolin. At first hearing he felt compassion for them and he grieved, but as the story unfolded itself through their song, his heart blackened, for it was sung with disdain for Maeglin and for Eöl. Tinnurion had now learned the terrible fate of his master and with it ended his ceaseless doubt, but his hatred for the Noldor grew ever stronger.

