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This subject contains information from the Expanded Cthulhu Mythos, and not based on H.P. Lovecraft's works directly. Aphoom-Zhah (The Cold Flame) is a Great Old One that appears similar to Cthugha but cold and grey.


Aphoom-Zhah was spawned by Cthugha during his visit to Hyperborea. There, Aphoom-Zhah was worshipped as a god. This put him in direct competition with other polar gods, Rhan-Tegoth and Rlim Shaikorth, which began to dispute with him for devotees.

This situation remained stable for some time until the Elder Gods arrived to destroy them. Rhan-Tegoth was sunk in a comatose state and Rlim Shaikorth was thrown to the sea aboard an iceberg. However, when they were about to apprehend Aphoom-Zhah, it reacted with such violence that it froze the regions of Hyperborea, Lomar and Zobna, giving rise to the North Pole.

This history is collected in the Pnakotic Manuscripts.

Aphoom-Zhah likely spawned the Gnoph-keh, Rhan-Tegoth, and Voorm. Though no human cult worships this being, Aphoom-Zhah is revered by the Gnoph-keh, the Voormi and his own race of minions: the spectral Ylidheem.