We have always camped in the lower campgrounds in this area but on our last trip out they were all full.  So we ended up all the way up here at Iron City and I am so glad we did.  We will stay here from now on if we are coming out to this area.  Very remote beautiful sites that are all in the trees, lots of shade and space to enjoy.  Its just outside of St Elmo which is an amazing old ghost town with lots of life still.  And some really good off-roading and hiking in the area.  Plus Chalk Lake, the falls, and the hot springs are all pretty close.