Not too long ago, I was at the Flint Quarry Trailhead and I happened to look up at the sign and noticed the words on the bottom: "Trail Rules on Back." Huh? I don't know how many times I had looked at the sign and never seen that. So I walked around back and looked. Whaddya know, St. Louis County Parks Rules of the Trail, complete with a phone number to report trail maintenance problems.