Belerin's Codex Of The Planes 6
From Immwiki
6 For those seeking other entry mechanisms to this plane, there are a number of avenues which have been featured in legend and myth. The main vein of historical research in this regard begins with what little history we have of the ancient alatharya, who almost certainly trafficked regularly in the Dream. The principal evidence for this is an archaeological find known as the Dilaen Tablet. Found in one of the numerous alatharya ruins on which Ilodaiya is built, the tablet is half of an engraving which discusses the means by which the elder alatharya entered the Dream. Evidently, the alatharya used magical artifacts known as 'Orbs of Dreaming' to open gateways to the Dream when needed. The stones were broken in certain "soft" locations, opening up temporary portals. They used the expanse of the Dream to scout new lands, to find exotic materials and magic, and purportedly to travel to places accessible from there. Unfortunately for us, most, if not all of these orbs were lost in the Sundering and the dark millennia that followed. I know of at least one augury which was cast by a scholar of the void, who sought such an orb. His infernal sources revealed that at least one such orb remained in existence, but he was devoured by the same sources before he could reveal its location. Even if such an orb were found, however, we would have to find one of the special locations used by the alatharya to create a portal. (Written here in the margin are the words: "Activated by the triplet of statues in Yithoul by Sydonus." )