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 Hang 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 Vietnam Caving Expedition Team to ensure that we meet international standards of safety and safeguard the integrity of the caves.

The Oxalis Business Principles Safety Management Arrival Departure Guide

Choose your adventure

Big promotion for Xiều (returned customer)

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.

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Trekking and exploring nature in Tu Lan
Trekking and exploring nature in Tu Lan
Starry night at Hang Tien campsite
Starry night at Hang Tien campsite
Swim underground at the Tu Lan Cave System
Swim underground at the Tu Lan Cave System
Camp inside the world's third largest cave - Hang En
Camp inside one of the largest caves in the world - Hang En
Explore the largest cave on Earth - Hang Son Doong
Explore the largest cave on Earth - Hang Son Doong
Inside one of the world's rarest underground caves
Inside one of the world's rarest underground caves

Our 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.

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.

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Safety is our top priority

Safety is paramount. We employ cave safety experts from The British Vietnam Caving Expedition Team 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.

More about Safety Equipment provided on tours

CHÀY LẬP FARMSTAY

As a top place to stay in Phong Nha, Chay Lap Farmstay embraces you with tranquillity surroundings of peaceful farming fields, private rooms, fully equipped accommodation, and authentic local experiences.

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