High-poly futuristic circular hatch door designed for underground or sci-fi environments. Features heavy steel construction with mechanical locking clamps, weathered surface details including rust, grime, and wear patterns. Single unified mesh with 499,636 polygons, UV-mapped and ready for detailed close-up renders or game cinematics. Includes PBR materials and supplied in GLB, OBJ, and BLEND formats for use in games, architectural visualization, VFX, and real-time rendering applications.