A huge underground dungeon carved i...

A huge underground dungeon carved into stone and deepslate. The structure has five underground levels connected by staircases and vertical shafts. Each level contains multiple separate rooms such as prison cells, storage rooms, guard halls, and large combat chambers. Corridors are narrow and maze-like. Some rooms are circular, others rectangular, creating variety. Add chains, broken walls, iron bars, mossy blocks, and dark atmosphere. The deepest level has a massive central chamber with pillars.