The largest cave passage in the world, Hang Son Doong, lies hidden in Vietnam's jungle, its untouched beauty a result of few visitors, with more people climbing Everest than exploring this wonder.
A Crack in the Mountain
In a small, impoverished Vietnamese community, the discovery of the world's largest cave, Hang Son Doong, brings about a transformative experience, exposing both breathtaking natural wonders and formidable obstacles to overcome.