Let me expand on this. Schott said he thought that any human-carved features would've been done to an already existing structure. Yet isn't the claim that the high underwater currents of that region created the structure? So it wouldn't have been created until the structure went underwater. Why would humans carve faces on something that didn't exist yet? And we know they didn't wait until it went underwater. And if the faces were carved, then the structure went underwater to be "finished" by the currents, why did the currents leave the faces intact? So if there has been only one ocean-rising event, then the whole structure was above water and made by humans. Humans may have used the natural grain of the structure to make their stages, but the ocean currents did not do it. The faces prove it.
Nope, the water didn't do anything. Didn't you see the exact same structures on land nearby? The structures were above water, the humans rearranged and carved some faces on them, then, the oceans rose and covered them. (it's that simple)