The Library of Babel: A mysterious pocket realm.
There exists a mythical place somewhere in between realms in which every book ever written and will ever be written exists in a nearly endless library. A pocket realm whos contents are ever so mysterious and indecipherable. It is known as the Library of Babel.
Not much in known about this pocket realm except what the ancient texts say about it. According to legend, this realm is "composed of an indefinite, perhaps infinite number of hexagonal galleries. The arrangement of the galleries is always the same: Twenty bookshelves, five to each side, line four of the hexagon's six sides. Each bookshelf holds thirty-two books identical in format; each book contains four hundred ten pages; each page, forty lines; each line, approximately eighty black letters." With 95 characters on a possible keyboard this means there is total of 95^1,312,000 books.
Most of the books contain meaningless jibberish. Random sequences of letters, punctuations, and spaces. However, no two books are the same. It is said that even the titles of these books are seemingly random nonsense. None of these books can be destroyed. All attempts to destroy any of them result in them shortly returning to their original positions in the library. The holds true for the structure of the library itself. Despite being made seemingly of wood, all attempts to damage the structure have failed.
People who manage to enter this realm seeking its hidden knowledge are eventually driven mad by the endless series of books containing just pure nonsense. Not only that, but just as finding the way into the Library of Babel is difficult unless you know how, finding the way out is said to be nearly impossible. Everyone who enters is trapped until they figure out how to leave. Statistically there is a book in this nearly endless realm that describes the way out and how to access it. However countless people have entered it and never returned. Once inside you cannot teleport or in anyway warp your way out of the Library of Babel. However, you can teleport between different locations inside the library.
Within this mysterious realm, people who find themselves trapped inside have no need to eat, drink, or even sleep. However aging is possible. Should you find a book whos contents actually make some kind of sense, you should be considered extremely lucky as most people only find complete gibberish. In fact a vast majority of all the books in the Library of Babel is just gibberish.
Despite the descriptions of library being infinite, this is not actually true. The Library of Babel is indeed finite but the sheer size of it gives the impression of infinity. It is estimated that the realm is 7.16^1,297,369 cubic light years in size. It is so large thar not even a significantly small fraction of the Library of Babel has been fully explored yet. You could explore a space 1 trillion times the size of the known universe and still have barely explored a statistically insignificant fraction of the library.
Time flows much slower in the Library of Babel. 17 hours on Earth = 2 years in the Library of Babel.