Sarawak Chamber, briefly illuminated by dozens of flashbulbs, is the largest cave chamber yet discovered on Earth—more than twice the size of Britain’s Wembley Stadium—and home to thousands ...

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 — ...

This story appears in the July 2014 issue of National Geographic magazine. Crouched on the floor in the mud in one of the biggest cave chambers in China, one of the biggest in the world, we can ...

Staff at Carlsbad Caverns National Park in New Mexico scorned the unknown visitor who discarded the Cheetos pack in the Big ...

He has even visited the chamber where he was stuck for so long. "I don't hold any grudges against that cave - it's not like it's the cave's fault," he says. Gràcia says he will continue mapping ...

Petty Officer Saman Gunan lost consciousness on his way out of the Tham Luang cave complex, where he had been delivering air tanks. The boys have been trapped for nearly two weeks in a chamber in ...

In the southeast corner of New Mexico, near the Texas border, you'll find the Carlsbad Caverns. This Big Room at this national park is the largest cave chamber in the United States. It's so big, it ...

Officially known as the Upton Stone Chamber, the artificial stone cave is just one of hundreds of similar chambers across New England. The igloo-like underground space is located at 18 Elm St.