Son Doong Expedition
Son Doong Cave is the largest cave on Earth, with its own eco-system and is embellished with gigantic formations. The Son Doong Expedition is truly the adventure of a lifetime.
VND 69,800,000/person
Home to the world’s largest caves,
central Vietnam’s Phong Nha is redefining
adventure travel in Asia
Oxalis Adventure is the leading adventure tour operator in Vietnam
We pioneered life-changing caving and jungle experiences in UNESCO-recognized Phong Nha-Ke Bang National Park and we are the gateway to Son Doong, the largest cave on the planet. But Son Doong is only the beginning – 70% of the jungle remains unexplored.
We’ve discovered and we visit more caves than anyone else
Some are big enough to fit skyscrapers, lending themselves to underground campsites unlike anywhere else in the world. Others house swimmable rivers that burrow beneath the ground. Every adventure is possible, from one-day adventures to four-day expeditions.
Community involvement and safety are paramount
Oxalis Adventure is 100% locally owned and we provide employment for hundreds of tour guides and porters in one of Vietnam’s poorest provinces. But we work closely with caving experts from the British Cave Research Association to ensure that we meet international standards of safety and safeguard the integrity of the caves.
Choose your adventure
Want to camp in the largest cave chambers on the planet? Or plunge into underground rivers? How about harnessing up and taking on subterranean rope-assisted climbs? All this is possible, and more! Take a look below and choose your adventure based on the number of days you have to explore.
Tu Lan Expedition
Go into the depths of the majestic Tu Lan Cave System and with plenty of trekking, underground swimming and other thrilling activities, you will explore 10 incredible caves.
VND 15,000,000/person
Hang Tien Exploration
Enjoy extensive jungle trekking, camping under the stars and exploring gorgeous caves, especially the Hang Tien Cave, the biggest dry cave of the Tu Lan Cave System.
VND 8,500,000/person
Wild Tu Lan Explorer
A great trekking and caving adventure including the wildest caves of the region like Rat Cave, Ken Cave, Kim Cave, Hung Ton Cave, Song Oxalis Cave and Tu Lan Cave!
VND 8,000,000/person
Hang Va Expedition
On this expedition, you will get to explore and enjoy adrenaline-pumping caving activities inside the incredibly beautiful Hang Va cave, known to have some of the rarest formations ever seen.
VND 8,000,000/person
Hang En Adventure
An unforgettable adventure into the third largest cave on Earth – Hang En, where you get a bucket list camping experience inside the cave and admire nature’s beauty like never before.
VND 7,600,000/person
Hang Tien Endeavour
A moderate tour where you will trek, enjoy a natural pool and camp overnight, while exploring the largest dry cave of the Tu Lan Cave System – Hang Tien.
VND 6,500,000/person
Tu Lan Encounter
A very enjoyable 2-Day tour where you get to take a plunge into some of Vietnam’s top river caves, based inside the mesmerizing Tu Lan Cave System.
VND 5,500,000/person
Hang Tien Discovery
Spend a day filled with adventurous trekking through the wilderness of the Tu Lan Cave System and explore the huge Hang Tien cave, also known as the Fairy Cave.
VND 2,000,000/person
Tu Lan Experience
This is one of the most popular one day tours in the region, as your day is filled with adventure and the unique experience of swimming underground.
VND 1,800,000/person
Phong Nha National Park
This one day tour’s itinerary has been designed in a way that makes it ideal for families, as they get the perfect balance of adventure and sightseeing in Phong Nha.
VND 1,650,000/personOur caves
Oxalis Adventure is the only adventure tour company to visit Son Doong, the largest cave on the planet. But there’s so much more to explore. We also hold exclusive rights to Hang En, the world’s third largest cave, and the enormous twin Hang Tien caves. Nuoc Nut and the Tu Lan cave system are underground adventure playgrounds with swimming and climbing. For phenomenal formations, venture to the more recently discovered Hang Va.
Son Doong Cave
Son Doong Cave is the largest cave in the world, with its own jungle, river and gigantic formations, it is truly a natural wonder unlike any other in the world!
Hang En Cave
Hang En Cave is the world’s 3rd largest cave located in Phong Nha Ke Bang National Park. Hang En is the best cave camping in the world
Tu Lan Cave System
Tu Lan Caves System is comprised of over 10 caves, in Tan Hoa village. The area has been used as film location for Kong: Skull Island movie.
Hang Tien Cave
Hang Tien is the largest dry cave of the Tu Lan Cave System, located about 70 km away from Phong Nha Ke Bang National Park.
Hang Va Cave
Hang Va Cave was found in 2012. This cave is located below Son Doong cave, and has rare formations called tower cone.
Nuoc Nut Cave
Nuoc Nut Cave has become one of the world’s most attractive natural wonders. This cave is suitable for family to do a bit of adventure
Team building with a difference
Nothing builds a team like exploring, swimming, climbing, cooking and sleeping in the wilderness. We are central Vietnam’s most established outdoor team building operator, with rewarding activities like scavenger hunts and obstacle course races. All our team building activities are tailor made for the size of the group and the objectives of the activity.
Safety is our top priority
Safety is paramount. We employ cave safety experts from the British Cave Research Association and use equipment from France, Switzerland and the UK to ensure that we meet international standards of safety. All our tour guides, safety assistants and porters go through a comprehensive training program.
Meet the team
Oxalis Adventure employs over 500 local people from Phong Nha and Tan Hoa, many of whom had turned to illegal logging and hunting to make ends meet. We also collaborate with and employ cave experts from the British Cave Research Association, ensuring safety and professionalism across our adventure tours.
