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Ghastly Realm, Falling Star Pit.
The gray mist drifted, resembling a cavernous space where passages were sometimes narrow and sometimes spacious, just like the myriad of cavernous spaces spread throughout the Great Domain.
The smaller ones could be as compact as an underground parking lot, so constricting that powerful beings could pierce through the spatial layers directly.
Yet the larger ones, just a single cavernous space, could be bigger than an entire ordinary world, containing environments such as mountains, rivers, forests, and more.
However, this was, after all, the Ghastly Realm.
The mountains were bald and rocky, the rivers displayed a death-like gray that discouraged any crossing, and the forests consisted only of twisted, dead trees that stretched out ghastly limbs like a myriad of demons.