Filmmakers of the renowned National Geographic Society will come to Vietnam on March 11 to shoot a documentary about Son Doong, the world’s largest cave located in the central province of Quang Binh in Phong Nha – Ke Bang National Park.

According to Phong Nha – Ke Bang World Natural Heritage Sitge management, a group of British explorers, led by the world famous spelunker, Howard Limbirt, will join this 20-day journey.

The trip will also have the participation of geologists from the Hanoi University for Natural Sciences.

The documentary, focusing on the Son Doong cave and the biodiversity of Phong Nha – Ke Bang, will be broadcast in 120 countries.

Nguyen Van Hoa, chairperson of the commune in which Son Doong is located, has proposed that the Government reward Ho Khanh, 40, who discovered the grotto.

Ho Khanh also found 12 other caves in Phong Nha – Ke Bang that he notes are not known to scientists yet.

In mid-2009, the British Royal Cave Society announced the discovery of the world’s largest cave by Ho Khanh, who had named it Son Doong. The cave is 2 kilometers in length, 150 meters at the highest point, and 90 meters wide.

Before this site was discovered, Deer Cave in Malaysia was recognized as the world’s biggest cave at 100 meters high, 90 meters wide and 2 kilometers long.