In the Mythos
Formerly several races of The People of K'n-yan had inhabited the entire underground world, which stretched down to unfathomable abysses and which included besides the blue-litten region a red-litten region called Yoth, where relics of a still older and non-human race were found by archaeologists....
— H.P. Lovecraft and Zelia Bishop's "The Mound (fiction)"
Yoth is a red-litten cavern beneath K'n-yan. It was once inhabited by the Serpent Men who fled here to escape the destruction of Valusia. In Yoth they built great cities, of which only ruins remain. Explorers from K'n-yan visited Yoth frequently to learn more of the serpent people's scientific lore.
According to the mythology of conquerors from neighboring K'n-yan, the downfall of the serpent people came when they brought up idols of Tsathoggua from N'kai, abandoning their patron deity Yig to worship their new god. As retribution Yig placed his curse upon them, forcing his few remaining worshipers to flee to caverns beneath Mount Voormithadreth.
In the era of modern men, the People of K'n-yan have largely abandoned Yoth to the decadent and bestial quadrupedal remnants of the Serpent People and whatever other monsters had not yet been exterminated by the humanoid conquerors, and have forbidden remembering the mysterious deeper worlds buried beneath Yoth, so that today the red-litten cavern world is an uncharted and dangerous place of silent and largely deserted cyclopean ruins of black basalt, abandoned and decaying super-science machinery, and mindless and idiot horrors even now descending into the final stages of their ultimate savagery. The Vaults of Zin and gulfs of N'kai might still hold ancient and terrible secrets still unremembered, unknown, or unimagined by even the ancient and wicked civilization of blue-litten K'n-yan.
See K'n-yan for details about this blue-litten region of the Hollow Earth located above Yoth, from which humanoid conquerors from the city of Tsath descended to enslave the last, degenerate, quadrupedal remnants of the Serpent People, and interbreed them with mammalian monsters for use as food, slaves, and sport.
See Mount Voormithradeth for details on this mountain, formerly located in the surface land of Hyperborea; caverns beneath the mountain served as the Hollow Earth retreat for the Serpent People when Yoth fell to some unspeakable catastrophe in earth's pre-human antiquity.
Vaults of Zin
See Vaults of Zin for details on these dungeons beneath the ruins of the largest city of Yoth bordering on the Dreamlands, where Gugs were confined for some long-forgotten offense against the gods, where fragments of the mysterious Yothic Manuscripts were recovered by archaeologists from K'n-yan, and other secrets of elder Yoth were buried away from the dim red-litten roofs of that cavern world.
See N'kai for the lightless gulfs of nightmare that lay deep within the Hollow Earth beneath even the Vaults of Zin, a black abyss into which Tsathoggua fled in elder times to slumber in peace away from its own worshipers, and into which the Shoggoths descended to roll and splash in hidden seas of eternal shadow after they toppled of the polar city of the Elder Things in antiquity....
Formerly several races of The People of K'n-yan had inhabited the entire underground world, which stretched down to unfathomable abysses and which included besides the blue-litten region a red-litten region called Yoth, where relics of a still older and non-human [reptilian quadruped] race were found by archaeologists. In the course of time, however, the men of Tsath had conquered and enslaved the rest; interbreeding them with certain horned and four-footed animals of the red-litten region, whose semi-human leanings were very peculiar, and which, though containing a certain artificially created element, may have been in part the degenerate descendants of those peculiar entities who had left the relics.
[The Gyaa-yothn] — or their principal ancestral [reptilian] element — had first been found in a wild state amidst the Cyclopean ruins of the deserted red-litten world of Yoth which lay below the blue-litten world of K'n-yan.... The chief ground for such a supposition was the well-known fact that the vanished inhabitants of Yoth had been quadrupedal... But it was also known from these manuscripts that the beings of Yoth had possessed the art of synthetically creating life, and had made and destroyed several efficiently-designed races of industrial and transportational animals in the course of their history - to say nothing of concocting all manner of fantastic living shapes for the sake of amusement and new sensations during the long period of decadence. The beings of Yoth had undoubtedly been reptilian in affiliations, and most physiologists of Tsath agreed that the present beasts had been very much inclined toward reptilianism before they had been crossed with the mammal slave-class of K'n-yan.
When the men of K'n-yan discovered the red-litten world and deciphered its strange manuscripts, they took over the Tsathoggua cult and brought all the frightful toad images up to the land of blue light... then they went down into N'kai's black abyss with their great atom-power searchlights they found living things - living things that oozed along stone channels and worshipped onyx and basalt images of Tsathoggua. But they were not toads like Tsathoggua himself. Far worse - they were amorphous lumps of viscous black slime that took temporary shapes for various purposes. The explorers of K'n-yan did not pause for detailed observations, and those who escaped alive sealed the passage leading from red-litten Yoth down into the gulfs of nether horror. Then all the images of Tsathoggua in the land of K'n-yan were dissolved into the ether by disintegrating rays, and the cult was abolished forever....
— H.P. Lovecraft and Zelia Bishop's "The Mound (fiction)"
Heresies and Controversies
- Alternative_theory. (source)
Associated Mythos Elements
- tomes and artefacts:
- H.P. Lovecraft and Zelia Bishop's "The Mound (fiction)" (where Yoth is described in detail)
- H.P. Lovecraft and Hazel Heald's "The Man of Stone (fiction)" (a cryptic reference to the "Yothic Emanation")
- H.P. Lovecraft's "The Whisperer in Darknesss (fiction)" (an off-hand reference to "Red-litten Yoth" as a place visited by the Mi-Go)