protoplasmic mass resting in a grotto deep beneath the frozen earth. The being is of a monstrous fecundity, spontaneously generating primordial single-celled organisms that pour unceasingly from its shapeless form. It guards a set of stone tablets believed to contain the knowledge of the Elder Gods. Ubbo-Sathla is said to have spawned the prototypes of all forms of life on Earth, though whatever its pseudopods touch is forever devoid of life. Ubbo-Sathla is destined to someday reabsorb all living things on Earth. Ubbo-Sathla possibly dwells in gray-litten Y'qaa underneath Mount Voormithadreth, and may have spawned another of its residents, the being Abhoth, whose form and nature is very similar. This similarity has led some writers to speculate that Ubbo-Sathla and Abhoth are the same entity viewed at different epochs under different names. The tablets that Ubbo-Sathla guards have been oft sought by sorcerers, though no sorcerer has yet succeeded in acquiring them. Yhoundeh In Smith's The Door to Saturn, Yhoundeh the elk-goddess is the name of the deity worshipped in the waning days of Hyperborea. Yhoundeh's priests also banned Tsathoggua's cult, and her inquisitors punished any heretics. As the Hyperborean civilization drew to a close, Yhoundeh's priests fell out of favor and the people returned to the worship of Tsathoggua. According to the Parchments of Pnom, Yhoundeh is the wife of Nyarlathotep, messenger of the Outer Gods. Cities Commoriom Commoriom was the first seat of power in Hyperborea, established by the pre-Human migrants from the south. In its heyday, Commoriom was a grand city, built of marble and granite and marked by a skyline of altitudinous spires. Legend has it that the populace fled Commoriom when the White Sybil of Polarion foretold of its destruction. However, Athammaus, headsman of Commoriom, disputes this claim and attributes the abandonment to the increasingly loathsome depredations of the horrid outlaw Knygathin Zhaum. Uzuldaroum According to Smith's "The Tale of Satampra Zeiros", Uzuldaroum became the capital of Hyperborea after the populace left Commoriom. The city lies a day's journey from the former capital. It was the last population center in Hyperborea before glaciers overwhelmed the continent. In H. P. Lovecraft's At the Mountains of Madness, the city of the Elder Things is called "a Palaeogaean megalopolis compared with which the fabled...Commoriom and Uzuldaroum...are recent things of today--not even of yesterday". Geographical locations Eiglophian mountains The Eiglophian mountains, mentioned in Smith's "The Seven Geases", are a