On my schedule for demolishing ill-conceived stonework, that cliff face in Atlanta is top of the list.
I have read suggestions that the nasal obliteration we see in classical sculpture is deliberate sabotage by successors and, more comprehensively, by general orders under Islam's stricture against figurative representation. I don't know how much credence to put in it, vs. natural tendency for cantilevered bits to fall off. But it seems like noses fare strictly worse than other projections.