The surface of Mammoth Cave National Park encompasses about 80 square miles. No one knows how big the underside is. More than 365 miles of the five-level cave system have been mapped, and new ...

As home to the longest-known cave system in the world, Mammoth Cave National Park is an especially apt name for this UNESCO World Heritage Site in south-central Kentucky. The natural wonder lies ...

MAMMOTH CAVE, Ky. — During a late January tour of Mammoth Cave, the guide clapped his hands, and the already dim lights went out. He had brought our group to a stop in a flat area – like a ...

Despite its reputation as one of the most beautiful autumn destinations for its foliage and dramatic views, polluting industrial facilities across Kentucky and the surrounding regions from the ...