Check out the Big South Fork on the KY/TN border

Places to visit:
Yahoo Falls -- tallest in KY
Cumberland Falls -- close to BSF one of only two places with a moonbow
Blue Heron Overlooks -- Spectacular views. Hike to Mine 18
Mine 18 -- reconstructed coal town -- ride the train from Stearns
. . . I've been going for 30 years and I still haven't seen all the sites. My wife grew up there; she hasn't seen them all. Most are an easy hike from a parking lot, but you can go as deep as you want. BSF is big.
Places to Stay:
Parkland in Stearns
Cumberland Park Inn, Campground, Cabins
Blue Heron Campground
Great Meadows Campground
The campgrounds are usually empty except for holiday weekends.