Son Doong cave facts: The world’s largest cave with depth max. 150 metres (490 ft), length approx. 9 kilometres (5.6 mi).
- The biggest cave on the planet when measured by cross-section.
- Discovered and explored for the first time in 2009. Only open to the public since 2013.
- Unique for the two enormous dolines (cave roof collapses) and underground rainforests.
- Home to the “Great Wall of Vietnam,” a 90m high calcite barrier.
- Various unusual cave formations, including huge cave pearls, towering stalagmites and phytokarst.
- Nestled in Phong Nha-Ke Bang National Park, home to some of the world’s largest caves.
- Oxalis Adventure works with the British Cave Research Association and the Vietnamese government to carry out the expeditions.
- For conservation and safety reasons, you can only visit Son Doong on four-day expeditions with Oxalis Adventure.
- On December 10, 1990, during a routine trip into the jungle, Mr. Ho Khanh accidentally discovered the cave entrance which now became known as Hang Son Doong.
- On April 7, 2009, Mr. Peter MacNab, a member of the British Cave Research Association (BCRA) was the first to enter Son Doong Cave.
- On 14 April 2009, Son Doong was announced by the BCRA expedition team as the world’s biggest cave.
- On March 17, 2010, the BCRA expedition team completed climbing the calcite wall called the “Great Wall of Vietnam” to exit the cave and completed the survey and measurement of the entire Hang Son Doong Cave with a length of over 9km and a volume of 38.5 million m3.
- On April 30, 2013, the Guinness Book of World Records published the 2013 book of world records, which recognized Hang Son Doong as the largest cave in the world.
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