Hang Son Doong cave

World’s largest natural cave

Hang Son Doong cave is a massive cave system located in Phong Nha-Ke Bang National Park, in Quang Binh Province, Vietnam. The cave was discovered by a local man named Ho Khanh in 1991, but it wasn’t until 2009 that it was fully explored and mapped by a team of British cavers.

Hang Son Doong is known for its enormous size and unique features. It is considered the largest cave in the world by volume, with a length of over 5 kilometers (3.1 miles) and a height of 200 meters (656 feet). The cave has its own river and jungle, and its main cavern is large enough to fit an entire city block of skyscrapers.

Hang Son Doong cave
The entrance of the incredible cave © Ryan Deboodt / Oxalis Adventure Tours

Due to its remote location and fragile ecosystem, only a limited number of tourists are allowed to visit Hang Son Doong each year, and all visitors must be accompanied by a licensed guide. The cave is also subject to seasonal closures to protect its delicate environment.

Visitors to Hang Son Doong can explore the cave’s unique formations, including its stunning stalactites, stalagmites, and underground rivers. They can also camp inside the cave overnight and witness its incredible natural beauty under the light of a headlamp.

Hang Son Doong cave is located in the heart of the Phong Nha-Ke Bang National Park, a UNESCO World Heritage site. The park is home to numerous other caves, as well as a rich biodiversity of flora and fauna.

Hang Son Doong cave
cave ecosystem

The cave was formed over millions of years by the erosion of limestone by water, and it is still slowly changing today. The cave is known for its unique geological features, including its large chambers, enormous stalactites and stalagmites, and underground rivers and waterfalls.

Exploring the cave requires a multi-day expedition, with visitors trekking through the jungle and rappelling down into the cave. The experience is physically challenging, but the stunning natural beauty of the cave makes it well worth the effort.

Due to its fragile ecosystem, there are strict rules in place to protect Hang Son Doong. Visitors are required to follow a “leave no trace” policy, and all waste must be carried out of the cave. The number of visitors is also limited to protect the cave’s delicate environment.

Overall, Hang Son Doong cave is a true natural wonder that offers visitors the opportunity to witness the power and beauty of our planet’s geological processes. It is a must-see destination for anyone interested in exploring the natural world.

Visit the cave in 3D

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