Among them, the pristine Lechuguilla Cave and the famed Carlsbad Cavern, home to one of North America's largest underground chambers. But there's more to this subterranean world than gigantic ...

NOVA: Are these cave extremophiles completely outside of the carbon-based system found on the surface? Northup: The ones in Lechuguilla are mainly but not totally outside the surface world.

Many of the world’s most iconic caves—Carlsbad Caverns and Lechuguilla in New Mexico, Mammoth Cave in Kentucky—were carved out over millions of years, by the plodding drip and flow of acidic ...

Carlsbad Caverns National Park boasts some of the most awe-inspiring caves in North America. One standout is the Lechuguilla Cave, often considered a natural underground lab that needs careful ...

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 ...