Cave pearls, a rare and beautiful phenomenon, are formed in limestone caves through the deposition of concentric layers of ...

Carlsbad Caverns is a maze of underground caves born from an ancient tropical reef. The caverns house North America's largest cave chamber, "the Big Room," which boasts a floor area of 8.2 acres ...

In Belize’s Actun Tunichil Muknal cave, a sacred Maya site, plants grow in darkness, sparking concerns about how tourism affects its fragile ecosystem.

Lechuguilla Cave at Carlsbad Caverns is the deepest limestone cave in the country, and the fifth-longest known cave in the world. Read more about Oil and Gas Development Delayed Near Carlsbad Caverns ...

Carlsbad Caverns is home to some of the most spectacular examples of underground geologic features found anywhere in the United States. Located in southeastern New Mexico, the park contains more than ...

A Pennsylvania dentist thought a “bat bomb," with 1,000 bats starting fires, would end the war faster than the atomic bomb.

Why Visit: Nestled low in the high Guadalupe Mountains, Carlsbad Caverns National Park contains more than 119 caves formed by sulfuric acid dissolution, a rare process that creates unique formations.

The deepest freshwater cave on Earth and a conduit to a 'fossil' sinkhole —Carlsbad Caverns: New Mexico's otherworldly caves with gypsum flowers and 'soda straws' dangling from the ceiling ...