Thank ya. East Fork and Ceasar's Creek, out east of Cincy?
Nice, it's an amazing place. I grew up about a ten minute hike from the North Fork of the Kentucky River so we had our own canyons and cliffs to explore without all the tourists, so we always stayed away aside from the occasional visit to Natural Bridge. Gonna have to make up for that now.
It was back in the 1960s, after Clay City flooded really bad. The Sierra Club campaigned against it, they even had a sitting Supreme Court justice come down for a protest hike at one point. Lol, I wouldn't have known about it myself if it wasn't for the glories of Wikipedia.