Look at this, these Rock pillars are big as all hell. Check out the scale, the pillars eclipse the size of the doors and entrance ways that need to support the height of the Numbers.
King sending mufuckas through mini-mountains with his sword attacks.... not a wall, a mountain.
Meanwhile, Big Mom canβt even get Kid attention and barely break the floor with her sword attack.
No wonder King vs Zoro is now outside, this fight would collapse the skull. Leave the inside fights for smaller scale stuff.