If mastered enough, could Haoshoku Haki destroy a large piece of land, maybe crack an island in half at most? (One Piece) I was curious because Shanks was cracking parts of Whitebeard's ship just from his presence, so couldn't that mean if mastered enough it could have more of a destructive power to physical objects instead of the mind when mastered enough?
We have no way to answer that because we have not been told by oda if that is possible and we have not seen anything on that level the closest we have seen is when shanks cracked a part of whitebeard ship.