In the deepest part of the Lower Grave Strata was located the forbidden location of the Undead Boundary, which even the Corpse Commanders weren't allowed to enter without an 'invitation'.
The atmosphere of this forbidden location is heavy and ancient, and somewhere within it exists a solitary platform suspended above a vast subterranean expanse.
Apparently, this platform was also an exchange platform, but unlike the exchange platforms outside, it wasn't made from that dark crystalline substance but from layered black stone fused with pale bone fragments, forming a circular dais etched with dense corpse-runes.
Those runes pulsed faintly, not in a steady rhythm, but in slow, breathing intervals as if the platform itself was alive.
Beyond this exchange platform stretched a colossal cavern that defied ordinary scale as the ceiling arched impossibly high above, lost in darkness, yet faint currents of Corpse Qi descended from unseen fissures, drifting like ghostly waterfalls.
