Nature’s underground wonders have captivated explorers and curious travelers across the country for centuries. From ...

There are alot of great caves in the US but there is a hot debate over which one is better Mammoth Cave or Carlsbad Caverns.

Bat colonies can reach truly enormous sizes, some with millions of bats pouring out to feed each night, and one cave in Texas has the largest of them all.

The largest cave in the northeastern United States is expected to become Pennsylvania’s 125th state park and first underground park. During Gov. Josh Shapiro's proposed budget address Tuesday ...

the sound can be heard anywhere from within the cave system, which covers about 64 acres (260,000 square meters). That makes it the largest musical instrument in the world. We’ll save the ...

They had crawled into Cave of the Winds ... The rest of us explored below, pressing forward, sounding the planet’s largest known enclosed space. Overhead the swifts chattered and bickered ...