need help from southern Indiana guys

My dad and I went down south on a 2 day scouting trip a few years ago. We went so many places I couldnt even begain to tell ya where all we were. One of the places we went looked really good and I would like to go back and possibly even turkey hunt this place.

Now heres where the help comes in, I dont know the name of the place or even where it was located. I do remember a couple things about it though, its somwhere in the south east part of the state, its state owned ground, there were tons of hills and a gigantic lookout tower on the top of the tallest hill. Also i believe there was a prison on the grounds, and theres an old bridge thats out right near the prison. Sound familiar to anyone?

Any help at all would be greatly appriciated.