Verily do we know little of the other universes beyond the gate which YOG-SOTHOTH guards.
Of those which come through the gate and make their habitation in this world none can tell; although Ibn Schacabao tells of the beings which crawl from the Gulf of S'ghlhuo that they may be known by their sound. In that Gulf the very worlds are of sound, and matter is known but as an echo; and the notes of our pipes in this world may create beauty or bring forth abominations in S'glhuo.
But now the barrier between our universe of light and the eternal lightlessness of S'hlhuo haply has grown thin. And when sourceless sounds occur we may justly look to the denizens of S'glhuo whose minds and form are hideous to behold
Shun them and stand not between nor seek to thwart them should they petition YOG-SOTHOTH and pay the fearsome price YOG-SOTOTH extracts to cross the barrier to our world for unfathomable purposes of their own. They will do little harm to those of Earth, and fear only that shape which a certain sound may form in their universe. …