Visitors at Mammoth Cave National Park had an interesting sight this weekend. Park officials said fog filled the popular Rotunda room on Sunday due to a storm system that moved through the park.

MAMMOTH CAVE, Ky. (WKRN) – A group of visitors at Mammoth Cave National Park in Kentucky got to see a rare sight on Sunday when a thick cloud of fog formed underground in the Rotunda at Mammoth Cave.

The longest cave in the world is now even longer, according to the Cave Research Foundation.Mammoth Cave National Park, located in South Central Kentucky, announced on its Facebook page that it has ...

Mammoth Cave National Park is Kentucky's lone national park. However, it isn't the only cave in Kentucky, or even the area. There are even more caves near the park and around the state than the caves ...