There was a really interesting video on one of the major TV stations last year that Ben's dad recorded just to show us about a man who had made almost a sport out of rock piling. It was after that I noticed there were rock piles starting to be made at our local beach (well, we don't really have sand beaches...our local rock collection along the lake is more accurate!). I wish I could remember which station and what show was featuring the man, but what sticks in my head is that it was a Sunday morning show and I'm almost sure it was on CBS. I should ask him if he remembers it when I next see him.