The floor beneath their feet didn’t consist of natural rock.
It was composed of polished black iron tiles, punched holes in with millions of circular drainage holes through which a thick, emerald-colored fluid dripped into underground reservoirs forty deep-water lengths below.
Lin Ke walked along the central suspended bronze narrow high walkway, his heavy boots echoing through a space so huge that the cave ceiling was lost in a ceiling of stale, oily smog.
This was Vault 0x7F.
It stretched for twenty-five square miles beneath the roots of the Black Mountains.
And filling this titanic cave, arranged in thousands of parallel, exactly perfect rows that pulled back into the dark like an infinite cemetery, were ten thousand huge dark rock giant pillars.
Each monolith stood eighty feet tall and thirty feet wide, carved from solid Nether-black glass.
Along their faces were upright watching viewports forged from semi-clear spirit-crystal.
