A few weeks ago I was out near Pullman, Washington, and came across this fine sign. It’s a nice succinct definition of what they are and why we need them. And who says the government can’t do good things. I also like the final sentence. Making it a game to find the next cairn is a nice way to keep kids hiking when they are complaining about being out too long. You can’t do that with one of those fancy GPS thingees that so many now rely upon.