Right. But the point being made above is that the outside of the dome doesn't look like a salt dome because of the lush vegetation.They’ve said the “mountain” is now a salt dome. I figure the Laughing Place section will become the salt mine considering it was themed to an underground mine shaft in WDW (not sure how this’ll work in Disneyland).
And my point is that the top ground layer of a salt dome doesn't have to look like salt pillars and can indeed be full of lush vegetation because the mine is underground.