"They’ve been inside the earth, too — there are openings which human beings know nothing of — some of them are in these very Vermont hills — and great worlds of unknown life down there; blue-litten K’n-yan, red-litten Yoth, and black, lightless N'kai. It’s from N’kai that frightful Tsathoggua came — you know, the amorphous, toad-like god-creature mentioned in the Pnakotic Manuscripts and the Necronomicon and the Commoriom myth-cycle preserved by the Atlantean high-priest Klarkash-Ton."
—H. P. Lovecraft, "The Whisperer in Darkness"