10000 x 10000 blocks. SCARY BIG FOR...

10000 x 10000 blocks. SCARY BIG FORTRESS WALL. Blackstone, deepslate, basalt, obsidian. Very tall thick walls. Huge square towers. Big towers at the corners. Big gate. Dark and scary. Lava around the walls. Many battlements and small windows. Symmetrical. Minecraft blocks only. WALLS ONLY. NO CITY.