Facts
10 + Surprising Facts About Vietnam
It has the world’s biggest caverns
Hang Son Doong (Mountian River Cave), is the biggest cavern on the planet. It is situated in the core of Phong Nha-Ke Bang National Park in the Quang Binh area of Vietnam. The second enormous cavern is the Son Doong caves which are likewise arranged in Vietnam. It is large to the point that a Boeing 747 could fly through its sinkhole.