I have a vague recollection from camping trip when I was little (so no worries if its too vague to track down) of being told if I went under a rock that was a tight crawl space and came out the other side the devil would be scrapped off my back. I was only 5 but it stuck in my memory because I said I didn't have anything on my back and was pushed in anyway while I was craning to see my back by my mean older sister, and got stuck. For quite a long time, as the sister told no one where I was even when it got dark. Stuck headfirst in a hole in the ground with your arse skywards for what seemed like hours, hard to forget. All I remember is it was in Longden Dale, Yorkshire.
There are rocking stones too, Huh?