§ Of Túrin Turambar The Silmarillion

When morning came the storm was passed away eastward over Lothlann, and the sun of autumn rose hot and bright; but believing that Túrin would have fled far away from that place and all trace of his flight be washed away, the Orcs departed in haste without longer search, and far off Gwindor saw them marching away over the steaming sands of Anfauglith. Thus it came to pass that they returned to Morgoth empty-handed, and left behind them the son of Húrin, who sat crazed and unwitting on the slopes of Taur-nu-Fuin, bearing a burden heavier than their bonds.