GPS will want you to take the right fork off of chalk creek rd. Don't, take the left one as if you were going to St Elmo. The right fork is pretty messy and you will get stuck if you don't have enough ground clearance.
Great little Campground near St. Elmo. There are 15 sites to choose from. We stayed in #15, which according to the camp host, is the most popular spot. It looked like it. The site had white rocks arranged in lots of neat patterns; circles, lines, and trail markers. This site is also across the road from the Iron City Cemetery. Go check it out when you stay.
The sites are one both sides of the road so you will get road noise from the off road vehicles that like to play in the area.
There is only one toilet and it's near the camp host. It's a bit of a walk from either entrance, but it's very clean and not stinky.