Scientists have expressed concern after one of the world's most unusual natural sites has uncovered a "concerning secret".

Hang Son Doong is in Phong Nha-Ke Bang National Park in Vietnam, near the border with Laos and is the world's largest natural ...

A mom sheepishly admitted she broke her foot after attempting a stupid TikTok challenge. Klaire Cave, 40, and her cousin ...

This story appears in the January 2011 issue of National Geographic magazine. “Past the hand of dog, watch out for dinosaurs,” says a voice in the dark. I recognize Jonathan Sims’s clipped ...

Take an otherworldly journey through Hang Son Doong, the world's largest cave located in Vietnam. The cave is more than 500 feet tall, 650 feet wide, and 29,500 feet long. Video courtesy of Ryan ...

This story appears in the June 2019 issue of National Geographic magazine. Italian physicist and photographer Alessandro Cerè took a break from work at the Centre for Quantum Technologies in ...