Perhaps you can explain how floodwaters 15 cubits deep, about 22 feet, cover a mountain 16,000 feet high. Go ahead, take your time....
It isn't my contention that they did. I propounded the Black Sea theory, remember?
However, maybe they were previously dehydrated mountains, and they only got to the size they are now because of all the water they absorbed. It had to go somewhere, didn't it?