logo
welcome
Live Science

Live Science

Hang Son Doong: The world's biggest cave, so 'outrageous in size' it fits 2 jungles and the 'Great Wall of Vietnam'

Live Science
Summary
Nutrition label

74% Informative

Hang Son Doong is the world's largest known cave, with enough space in some of its passages to fly a Boeing 747 through them.

The cave sits beneath a lush jungle in Vietnam 's Phong Nha-Ke Bang National Park and hosts primeval forests that thrive thanks to giant "skylights" in the rock.

It formed 2 to 3 million years ago inside the biggest limestone massif in Asia .