§ Of Túrin Turambar The Silmarillion

With little hope Beleg departed from Amon Rûdh and set out northward, towards the Crossings of Teiglin, following in the track of the Orcs; and he crossed over the Brithiach and journeyed through Dimbar towards the Pass of Anach. And now he was not far behind them, for he went without sleeping, whereas they had tarried on their road, hunting in the lands and fearing no pursuit as they came northward; and not even in the dreadful woods of Taur-nu-Fuin did he swerve from the trail, for the skill of Beleg was greater than any that have been in Middle-earth. But as he passed by night through that evil land he came upon one lying asleep at the foot of a great dead tree; and Beleg staying his steps beside the sleeper saw that it was an Elf. Then he spoke to him, and gave him lembas, and asked him what fate had brought him to that terrible place; and he named himself Gwindor, son of Guilin.