The name of this verse is indeed quite the oxymoron, as it has multiple Terminal Boxes. In fact, it is very dense. However, people named it this way because every single object in this place cannot be seen, it blends into the black color of the rest of the "void."
You need special technology known as Seekrs to see any Terminal Boxes within this place. The sheath, however, coating them is said to be very easy to traverse, making Seekrs essential to build a multi-Tbox civilization. Also, on a sillier note, trees grow on the sheaths which are known to bear fruits that taste of lemon and apples.