Oxalis Adventure Tours provides high quality, cave and jungle adventure tours in the UNESCO World Heritage Site of Phong Nha-Ke Bang National Park and surrounding cave systems. The area boasts both the largest and the third largest caves in the world.

Oxalis Adventure Tours holds an International Tour Operator’s Certificate issued by the National Tourism Bureau of Vietnam, and is made up of a professional team of experts on cave research, safety, tourism and sustainable development.

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


  • All our tours are carefully designed by the British Caving Research Association
  • We only take small groups of tourists with qualified experienced guides
  • At the heart of Oxalis is the desire to provide stable employment for local people
  • Our mission is to create a world-class adventure tourism business in Quang Binh province
  • We only use the best brands of helmets, head torches, life jackets and safety equipment

Featured Tours


Our Caves

Hang Va Cave

Although Hang Va was found recently (2012) but it has grasped a lot of attention from the public (both in Vietnam and in the world) because of its wonderful formations inside the cave.

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Son Doong Cave

Son Doong Cave is the largest cave in the world and is in the heart of the Phong Nha Ke Bang National Park, with its own jungle, river and gigantic formations, it is truly a natural wonder unlike any other in the world!

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Hang En Cave

Hang En is the world’s 3rd largest cave, succeeded only by Deer Cave in Malaysia and Hang Son Doong, also located here in the Cave Kingdom of Vietnam, Phong Nha-Ke Bang National Park.

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From The Blog

Hang Son Doong

Wrap up 2015 Son Doong season

In 2015, 482 adventurers and 26 media successfully completed the tour and returned with incredible stories...

03 September 2015


Tu Lan Adventure Race 2015

Oxalis kicks off the first ever Tu Lan Adventure Race on April 28, 2015, with 10 teams of 5 people each competing on a course of challenging activities through the wild jungle and caves of Quang Binh Province!

24 March 2015

Phong Nha countryside

Phong Nha Travel Tips

Welcome to Phong Nha! We hope you love this village as much as we do. As you’re passing through, you might be a little bit unsure of the norms around here, but luckily, your local travel specialists are here to assist you with that.

12 November 2014

Hoi An along the waterfront

Hoi An: A Charming Town

So, you’ve gotten your fix for adventure and the wild caves and jungle of Vietnam, now what’s next? Well trust us, there’s a lot left to see of this gorgeous country!

12 November 2014

Our Local Travel Specialists

Local Travel Specialist At Oxalis ToursOur expert travel specialists can help you with all your questions and concerns, ranging from supporting you in determining which tour is most suitable for you, booking your tour, assisting you with details regarding your arrival and departure, and much more.

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What Others Are Saying