During the boat’s final inspection Tuesday, a leak in an internal bulkhead seam was found, KDF said. That leak prevents the Belle from being able to carry enough fuel for the race.

The Belle of Louisville won't be avenging its loss last year to the Belle of Cincinnati in the Great Steamboat Race this year ...

Under a swath of Kentucky hills and hollows is a limestone labyrinth that became the heartland of a national park. The surface of Mammoth Cave National Park encompasses about 80 square miles.