Yellowwood state forest campground does not accept reservations. It is first come, first served. Drive up, select your site, and then go to the park office to pay using a self-pay envelope. Bring exact change(cash). Current prices are listed on the Indiana DNR website. The park office does have firewood for sale, but only during open hours, which are limited. There is no camp store, no playgrounds, and no pool. Swimming is not allowed in Yellowwood lake. Each site has a fire ring with grill grate and picnic table. There are four campground loops and a horseman’s campground. Campgrounds have vault toilets and drinking water access. I do not know if water is turned on year-round. There are no modern restrooms. Sites are wooded and fairly level. All sites are primitive. We have only tent camped at Yellowwood, so I can’t say what size travel trailers would fit in the sites. Yellowwood road changes over to gravel once you enter the state forest. It is well maintained. You can also access the forest by Jackson Creek road, but you’re on gravel for longer, and I seem to remember it being a bit rougher. We have camped at Yellowwood several times between 2011-2018. The only time we have ever seen the campground busy is over big holiday weekends like Labor Day, Memorial Day, and 4th of July. Otherwise use is light. We have several times been one of two or three campers in the loop. Several trails are nearby in the state forest, including the Tecumseh Trail. Horse trails are also available. Yellowwood lake is adjacent to the campground and there is a boat ramp, but there are limitations on boating(motor size). Check with the DNR website. Camp here if you like quiet, peaceful camping. You won’t run into a bunch of loud partiers.