An imposing, ancient Abyssal Door: a colossal obsidian slab etched with shifting, indecipherable glyphs. Faint red fissures pulse like veins beneath its surface, casting an eerie, sickly glow. Void of handles or keyholes, its silent presence seems to watch as a low, rhythmic thumping vibrates the air—while the cryptic symbols twist into haunting shapes upon prolonged gaze.