"By fairy hands their knell is rung; by forms unseen their dirge is sung."
-William Collins
The legends of Inis Mona and in many places on Trynnalta, are host to tales of various degrees of factuality in regards to another world that seemingly lives in the shadow of the Mortal Realms, yet bedims those same lands with its own supernatural beauty. Many times are the lands of Otherworld described as a mural of our own world painted with far more colors, far more skill and far more detail than our own. But, it is still a place of danger. The Courts of Autumn and Winter are constantly on patrol for new "entertainment", often sending their Unseelie agents out into the Mists of Myth to obtain new curios. Likewise, even the Seelie Courts of Spring and Summer can be duplicitous and obsessive, often absconding with minstrels and artists, obsessing over them, then discarding them as the mood passes.
Each of the regions within Otherworld is both connected to, and removed from, every other region. Each borders is wreathed by a sea of rolling white fog banks that are impenetrable. Travel in Otherworld is already dangerous with the machinations of the Seelie and Unseelie court, yet its worsened by inconsistent travel between regions and the predations of the Deseelie; fey who hold no allegiances to any court and work as free agents or mercenaries.
They are, in the end, realms of extreme magic where even the storybooks of Trynnalta seem to come to life before ones' very eyes. Yet, that should not trick one into lowering the guard. They might seem the stuff of fairytales and myth, but they can and will injure you.