Shayol Ghul
In the
Wheel of Time fantasy novel series,
Shayol Ghul is a mountain beyond the
Great 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.
The
Prophecies of the Dragon state that
Tarmon Gai'don will take place in part at Shayol Ghul, particularly the line:
"his blood (the Dragon's) on the rocks of Shayol Ghul, washing away the Shadow, sacrifice for man's salvation."
*http://www.encyclopaedia-wot.org/geography/blight/shayol_ghul.html