Marion County’s parks are beginning to fill up as the 49th Annual SuperClean Knoxville Nationals approach. Marion County Park Ranger Dave McKinney tells KNIA/KRLS News that reserved campsites at the park were booked full early this month, and that only a handful of first-come, first-served campsites will remain available. McKinney adds that overall, the traffic for the summer camping season has been average at Marion County park.