I have seen a few threads in the last week - some old and some new - about someone walking by a pile of rocks or even digging in their backyard and pulling up a chunk of rock that can be used as a hone. I'm curious, is there any method to the madness, or is it one of those trial and error scenes? I would love to pull up rocks from the ground and find that serve a purpose, but I really have no idea where to start/where to trespass.

Any thoughts?