§ Of the Ruin of Doriath The Silmarillion

Then he turned away, and passed out from the Thousand Caves, and all that saw him fell back before his face; and none sought to withstand his going, nor did any know whither he went. But it is said that Húrin would not live thereafter, being bereft of all purpose and desire, and cast himself at last into the western sea; and so ended the mightiest of the warriors of mortal Men.