Thaldrin oversees the mining of Saronite in Ymirheim. He appears to be either too strong-willed, or too ignorant to be manipulated by the Old GodYogg-Saron, whose whispers can be heard echoing throughout the mine, slowly driving its inhabitants insane. Furthermore, he seems to be oblivious to his slaves odd behavior, such as suicide, heightened aggression, and singing of hearing beautiful voices, caring only for them completing their work as effectively as possible.