§ Of the Ruin of Doriath The Silmarillion

As darkness fell Húrin stumbled from the rock, and fell into a heavy sleep of grief. But in his sleep he heard the voice of Morwen lamenting, and often she spoke his name; and it seemed to him that her voice came out of Brethil. Therefore when he awoke with the coming of day he arose, and went back to the Brithiach; and passing along the eaves of Brethil he came at a time of night to the Crossings of Teiglin. The night-sentinels saw him, but they were filled with dread, for they thought that they saw a ghost out of some ancient battle-mound that walked with darkness about it; and therefore Húrin was not stayed, and he came at last to the place of the burning of Glaurung, and saw the tall stone standing near the brink of Cabed Naeramarth.