That’s the advice from Indiana’s Department of Natural Resources.
The DNR warns its going to be another busy summer season, with a lot of people to heading to a campground at some point during the next few months.
They say there will be weekends that people without reservations will be out of luck.
Last year was also a huge year for Indiana campgrounds because the coronavirus closed almost everything else in the state.
Visit the Indiana DNR website here for all the resources you’ll need before you head for the great outdoors.