Any remote or hike-in camping sites in Ohio?

Hello, does anyone know of very primitive camp sites in Ohio? Preferably on the east side but it's not that important. I was really interested in Hocking Hills but I want a camp site that is away from people and very secluded, not your typical camping where your car is right there next to you at the site. Something where I could hike in would be great. Does this exist in Ohio?! Or if you know of any places in southern Michigan or western Pennsylvania that would be great too. Thanks!