I know of it. I actually went on a group ride a few years back that was planned to visit the cemetery and Shiloh National Battlefield. Unfortunately we spent so much time weaving around backroads and stopping / starting that we never made either destination. It’s on my list. I’m surprised to hear of a non Alabamian who knows of it. I grew up abut 30-45 minutes from there and didn’t know about it most of my life.