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The biggest cave on the planet when measured by cross-section. Discovered và explored for the first time in 2009. Only open to the public since 2013. Quality for the two enormous dolines (cave roof collapses) & underground rainforests. Home to the “Great Wall of Vietnam,” a 90m high calcite barrier. Various unusual cave formations, including huge cave pearls, towering stalagmites & 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 và safety reasons, you can only visit Son Doong on four-day expeditions with Oxalis Adventure.

Local man Ho Khanh discovered Son Doong in 1990 while searching Phong Nha-Ke Bang National Park for food and timber lớn earn a modest income. During his tìm kiếm he stumbled across an opening in a limestone cliff, noticed clouds billowing out from the entrance & heard the sounds of a river raging from somewhere inside. He returned trang chủ and forgot about the cave.

Ho Khanh met Howard and Deb Limbert of the British Cave Research Association (BRCA), who were conducting exploratory caving expeditions in the area. After hearing his stories, they urged Ho Khanh khổng lồ rediscover the cave, which he eventually did in 2008, after several attempts. In 2009, he led Howard, Deb & a team of other caving professionals lớn the opening. After the first survey in 2009, the team were able lớn conclude that the cave had the largest cross-section of any cave anywhere on the planet.

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The cave was named “Son Doong” và Ho Khanh is still an integral part of every Son Doong Expedition

Son Doong is relatively young – about 3 million years old in a limestone area dating back 400 million years. The mighty Rao Thuong River carved out Son Doong as it eroded away the limestone, forming an enormous tunnel beneath the Truong Son Mountains. The large dolines (or skylights) collapsed sometime in the last 500,000 years, creating massive openings khổng lồ the outside world. Cave pearls the size of baseballs & stalagmites the form size of tall buildings have formed from water dripping from the cave ceiling.

The first expedition was halted by a 90m high calcite barrier, which was jokingly dubbed the “Great Wall Of Vietnam.” It wasn’t until the second expedition in 2010, when the Great Wall was finally climbed và the end of the cave was found. The main huge passage is over 5km long with sections reaching up to lớn 200m tall and 150m wide. Son Doong is large enough to lớn house an entire 40-story thành phố new york City block skyscraper.

Cave experts are researching the connection between Son Doong Cave and neighbouring Thung Cave. If the connection is made , Son Doong will be the largest cave in the world by volume, as well as cross-section. Find more information about the diving expedition in Son Doong Cave.

You can only visit Son Doong on four-day expeditions with Oxalis Adventure.

Son Doong Expedition 4 Days

Whether you prefer long treks, camping in a cave, sleeping under the stars in the jungle, swimming underground in river caves, explore the huge dry caves or just taking an exploratory day trip, Oxalis Adventure Tours can provide the right amount of adventure just for you.

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Hang Tien Discovery

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VND 6,500,000/person Promo price VND 5,850,000 Normal price VND 6,500,000/pax
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This tour offers a glimpse into the amazing beauty of the Tu Lan area: caves, karst mountains, jungle, và waterfalls. It is an opportunity to go deep into the rugged and untouched nature of Vietnam.

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Hang Va Expedition

A true underground adventure lớn visit two spectacular river caves of the National Park. Nuoc Nut Cave is a large cave with both dry và river passages with clear xanh pools.

Promo price VND 8,000,000 More benefits included
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The perfect journey to lớn explore both most fascinating wet & dry caves, especially Hang Tien 1 and 2. They are the biggest dry caves of the system with enormous entrances, large calcite formations and unusual rock features.

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