Hang Son Doong cave — the name means "Mountain River ... born from the compressed shells and skeletons of ancient sea animals ...

The world’s largest cave is over five miles long - so big that even a Boeing 747 could fit inside it. Hang Son Doong is in Phong Nha-Ke Bang National Park in Vietnam, near the border with Laos ...

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 ...

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 ...

Animals were quick to colonise ... Discovered in 1992, Hang Va cave (pictured) is hydrologically connected to Hang son Doong and although much smaller, it hides a remarkable world.

Son Doong, the world's largest cave in central Vietnam, ranks among the world's most surreal destinations, according to U.K. travel magazine Wanderlust. Sinkhole 1 aka "Watch Out for Dinosaurs" inside ...