Explore the stunning Son Doong cave in Vietnam, which is so vast it requires a four-day trek to explore fully. This ...

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 ...

Three divers who helped rescue a Thai football team last year have made a fresh discovery in Vietnam where they explored a tunnel that could expand the footprint of the world's largest cave. The team ...

An enormous limestone cave in Vietnam is the subject of a jaw-dropping new video that uses aerial drones to show its immense scale and beauty. Hang Son Doong is the world's largest cave, featuring a ...

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 ...

Scientists explored several lava tubes in Vietnam and found some “bent-toed” creatures in the caves in a first-of-its-kind sighting, photos show. Photo from Nguyen, Tran, Nguyen, Hoang and Nguyen ...