Shayol Ghul

Shayol Ghul is a mountain beyond the Blight in the north of the known world. It is the place in the physical world to which the Dark One's prison is closest. The Dark One can exert far greater control over the mountain and the surrounding area than other places in the physical world, and his high-ranking followers such as the Chosen travel there to commune with him. Below the mountain lies the fog-shrouded valley called Thakan'dar, site of the forge where the swords of Myrddraal are created.