Generate a Grand Entrance Hall for ...

Generate a Grand Entrance Hall for a Dwarven underground mega base in Minecraft. DIMENSIONS: 42 blocks wide, 48 blocks deep, 22 blocks tall. STYLE: Ancient carved dwarven kingdom. Grand, aged, atmospheric. Inspired by Khazad-dûm from Rings of Power — massive but detailed, not symmetrically perfect, slightly worn. FLOOR: Polished deepslate as the main floor. Deepslate tile borders framing a central path down the middle. Cracked deepslate bricks as outer floor edges near the walls. WALLS: Primary material is deepslate bricks with cracked deepslate bricks mixed in for an aged texture. Walls should have recessed rectangular alcoves cut into them at regular intervals, approximately 1 block deep, 3 wide, 5 tall. Chiseled deepslate used as decorative panel inserts between alc