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 ...

At the end of Hang Son Doong stood the Great Wall of Vietnam, a 200-foot barrier to be conquered by both ladder and rope climbing. In a cave there’s no way to get a signal. There’s no way to ...

Vietnam is known for its karst landscapes, characterized by caves, caverns and sinkholes that harbor diverse ecosystems underground in near-total darkness. It was in this environment, deep in the ...

HANOI (Bernama-VNA): Vietnamese scientists have discovered a new snail species in Son Doong Cave within the Phong Nha - Ke Bang National Park in the central province of Quang Binh, and named it ...

Nguyen, Stoev, and Vu (2025) Zoosystematics and Evolution Vietnam is known for its karst landscapes, characterized by caves, caverns and sinkholes that harbor diverse ecosystems underground in ...

HANOI, Jan 15 (Bernama-VNA) -- Vietnamese scientists have discovered a new snail species in Son Doong Cave within the Phong Nha - Ke Bang National Park in the central province of Quang Binh, and named ...