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Vietnam 2020 BCRA Expedition to Quang Binh

The 2020 caving expedition to Quang Binh was a great success despite a number of difficulties. In total over 10.5km of new cave passage was explored and surveyed and 12 new caves were found.

Photo Essay: Inside Son Doong, the World's Largest Cave

Only a thousand people have passed through this cave since its discovery. We were lucky enough to be among them.

Son Doong - Vietnam's Mammoth Cave

Explore the 2.5-mile Hang Son Doong, or “mountain river cave,” along the Vietnam-Laos border via this animated 3-D flyby.

Vietnam cave craze

Vietnam is putting caves on the map — literally. This year alone, 57 have been discovered in the UNESCO-listed Phong Nha-Ke Bang National Park

Journey through the largest cave in the world - Hang Son Doong

Son Doong Cave—the largest in the world—wasn't discovered until 2009. Now, National Geographic grantee and photojournalist Martin Edström, takes us deep inside Son Doong as he tries to capture its overwhelming size and beauty in 360 degrees.

Explore Hang Son Doong, the world's largest cave

I smile at our guide's warning and enter the lush jungle growing inside Hang Son Doong, a 3-million-year-old cave in the central part of Vietnam. Water drips from a gaping scar in the ceiling over 100 meters (328 feet) above us. A spectacular sunbeam starts to creep down the side of the serrated cliffs. The shrill call of birds and macaque monkeys echoes off the limestone, drifting in from the unseen world beyond the skylight.