Been there many times since it is in my home state. Cave tours are excellent, but also a good place for hiking, camping and fishing. Camp at Houchins Ferry area to isolate yourself from the crowded electric campsites. This area is tent only and you can fish in the river right off the cliffs.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe