This Lesser-known U.S. Destination Is Hiding the 'Shortest, Deepest River in the World' — and an Underground Cave That Leads to a 'Blue Hole'

Kentucky’s disappearing Lost River reappears in this underground cave, which hides the blue hole.

Long before the cave became a tourist attraction, it played an important role in the nations history.

It was an ancient native hunting ground before serving as a Civil War campground.

Credit:Courtesy of Visit BGKY

The Lost River Cave sits below a wooded, urban 72-acre park in the center of Bowling Green.

Courtesy of Visit BGKY

Courtesy of Visit BGKY