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The dark form ran toward him with incredible swiftness. When it came near he saw that there was a kind of face on the squat ebon body, low down amid the several-jointed legs. The face peered up with a weird expression of doubt and inquiry; and terror crawled through the veins of the bold huntsman as he met the small, crafty eyes that were circled about with hair
~ Clark Ashton Smith , The Seven Geases


This subject contains information from the "Lovecraft Circle" Myth Cycles, and while guided by HPL are not based on his work alone. This subject contains information from the Expanded Cthulhu Mythos, and not based on H.P. Lovecraft's works directly. This subject contains information from the Mythos Adjacent Works, and while share similar themes and features of the Mythos are not based on his work, or generally considered a part of the Mythos proper. Atlach-Nacha resembles a giant spider with an anthropomorphic face capable of some human expression. It dwells in a cave system beneath Mount Voormithadreth, in the now extinct Arctic kingdom of Hyperborea. There, it spins a great web, bridging the many caverns of the underworld together. In its original appearance in the short story "The Seven Geases", Atlach-Nacha dwells between the lairs of Tsathoggua and the antehuman sorcerer Haon-Dor.

According to later Chaosium material, this web is a bridge between the Dreamlands and the waking world. It is believed that when the web is complete, the end of the world will come.

According to the fiction of Lin Carter, it is served by the "Grey Weavers". A burial ritual in the Book of Eibon references this god.


  • In the Doom megawad Strange Aeons, the Spinner in Darkness is revealed to be the primary antagonist, tricking the player character into traveling across the Dreamlands to free it from its prison.
  • Atlach-Nacha was created by Clark Ashton Smith; it has been mentioned or elaborated upon by August Derleth, Colin Wilson, Brian Lumley, Lin Carter, Laurence J. Cornford, James Ambuehl, and by some Chaosium products.
  • Atlach-Nacha is referenced by name in the Thunder Lotus produced game "Sundered"; when the player corrupts an ability that allows them to run up walls they will then instead turn into a purple anthropomorphic spider and climb the walls instead. The corrupted ability is known as "Atlach-Nacha's Grip"



Main article: Atlach-Nacha/Gallery