Generate an ultra-detailed Minecraf...

Generate an ultra-detailed Minecraft underground mega base inspired by top YouTube builders (Hermitcraft style, cinematic mega builds, highly polished and professional). Overall concept: * A massive underground base carved inside a mountain * A long, grand entrance tunnel leading into a central hub * The central hub connects to 3 large corridors (left, right, forward), perfectly symmetrical Scale and proportions: * Mega base scale (very large) * High ceilings (20–30 blocks tall) * Wide corridors (10–15 blocks wide) * Strong sense of depth, repetition, and scale Architectural style: * Medieval-industrial underground hall * Heavy use of arches, vault ceilings, and layered depth * Inspired by YouTube builders like Grian, Mumbo Jumbo, GoodTimesWithScar, BdoubleO100 Materials: * Stone b