Hang Son Doong in Vietnam: Largest cave in the world - AmazingPlaces.com

Hang Son Doong Cave

Largest cave in the world, located in Vietnam

The Hang Son Doong Cave in Vietnam is since 2009 known as the largest cave in the world. You can visit the cave, this multi-day excursion is a wonderful adventure.

Son Doong Cave is the largest cave in the world. It was opened to tourism in 2014. When you see footage of this remarkable natural phenomenon, you’ll quickly realise it should be on your bucket list.  

The Hang Son Doong Cave became famous in 2009 when it was declared the largest cave in the world. It is five kilometres deep and 150 metres wide and up to 200 metres high. A river flows through the cave, and there is even a tropical rainforest. This can grow thanks to the sunlight that shines through the sinkholes along the cave ceiling.

A visit to the Hang Son Doong Cave. ©Carsten Peter

New research 2019: Hang Son Doong is even bigger

In May 2019, three British divers went on an expedition into the cave. They investigated the waterways and promptly found a new underwater tunnel. They found that one of the underwater tunnels connects Son Doong to another cave; Hang Thung. This means the cave is even bigger.

Hang Son Doong Cave has intriguing rock formations everywhere. ©Carsten Peter

Son Doong means mountain river cave, obviously named after the river that runs through the cave. The river created this cave around 2,5 million years. The water slowly eroded the lime stone surface, which sometimes caused the top of the cave to collapse.

Overal zie je vreemde rotsen in Hang Son Doong. ©Carsten Peter

These sink holes are special because this is where there is lush vegetation inside the cave. Another remarkable thing in Son Doong are the so-called cave pearls, perfectly formed spheres created by concretion of calcium salts that form layers around a grain of sand, for example.

You can see incredibly far in the cave. ©Carsten Peter

Please Note:

Access to the cave is difficult. It can only be reached by taking a multi-day camping expedition with a guide. It’s very pricy (around 5000 US dollar) and gets booked out quickly. There is a waiting list of several months, because the trip is so popular.

More information: www.sondoongcave.org en oxalisadventure.com/cave/son-doong-cave