Massive underground Minecraft indus...

Massive underground Minecraft industrial dome chamber buried deep beneath a flat meadow biome. Gigantic excavated cavern with huge scale and enormous empty vertical space. Dome walls stay vertical for 15 blocks before curving into armored dome ceiling. Three giant industrial tunnel gates connect horizontally into dome walls. Interior is militarized and industrial: massive mech bays, giant cranes, suspended catwalks, ship docks, cargo machinery, turrets, scaffolding, pipes, cables, warm industrial lighting, brutalist deepslate architecture, and huge central elevator tower descending downward. Dark cinematic atmosphere with layered machinery and towering vertical scale.