“Vietnam’s Phong Nha-Ke Bang National Park” is home to the world’s largest cave-a place few people have visited,” Jarryd Salem said.

From the second campsite inside Son Doong Cave visitors can stare out of an erosion hole and catch stars glistening on a clear night.

A strong crew of 20 porters, three guides, two caving experts, two chefs and two national park rangers assist on every expedition to Son Doong Cave.

Sections of Son Doong Cave are so steep and perilous that ropes are required to help lower people safely through them.

The enormous exit of Hang En, the third largest cave in the world, is more than 120-meter high and 140-meter wide.

The climb down from a section known as the “Garden of Edam” leads to the second campsite in Son Doong Cave.

Fancy footwear

End of Son Doong Cave

Rao Thuong River

Hang En campsite

Arm wrestling

Cave pearls

Entering the jungle

Narrow Hang En

Ban Doong elders