on the chattooga, woodall shoals is a sliding drop that develops a nasty terminal hole at high water. you could die there, but it's not the most notorious death spot on the chattooga. I think a dog died there a few years ago.
I believe that the rapid that the other guy was referring to is crack in the rock, where a large rock creates three channels in the river complete with wood and sieves. crack is sketchy, and I've always walked it, although middle crack gets run by lots and lots of people with questionable skills.