Just got back from an AWESOME, WET, weekend at Rock Island State Park. I stayed at the RV camping area and participated in the Tennessee State Park Rock and Row Triathlon. (Which ended up being a duathlon due to the rain) The campgrounds were recently (w/i a few years) renovated, are well landscaped and easyisly accessed. The bathrooms are in good shape, and clean. The falls are the thing to see and depending on the season you go you can get reasonably close or see them from above. Several moderate trails , water sports and cycling. The town of Rock Island sports several antique shops with good deals if that's your thing and other local small businesses which keep it interesting .