Vietnam's Hang Son Doong remains the world's largest cave with new discoveries expanding its size

Hang Son Doong, located in Vietnam, is the largest cave in the world, discovered in 1990. It features towering stalagmites, ancient marine fossils, and internal jungles illuminated by massive skylights. Recent findings include an underwater tunnel, further expanding the cave's size. This remarkable geological formation continues to attract interest due to its unique features and vastness.