Son Doong Expedition — 6 Days Exploring the World's Largest Cave
Dong Hoi → Phong Nha → Bo Trach → through jungle → Son Doong → Phong Nha → Dong Hoi
Overview
Organize a 6-day Son Doong expedition through licensed operator Oxalis. The world's largest cave with an underground tropical forest, underground river, and giant sandbanks.
Son Doong — a wonder beneath the earth
Son Doong is the world's largest natural cave, located in the core of Phong Nha-Ke Bang National Park. Discovered in 2009 and opened to a limited number of visitors since 2013, only a few hundred people are allowed to set foot here each year. This is not an ordinary tour — it is a 6-day expedition through the jungle, crossing rivers, and bivouacking inside the cave.
What you will see
Giant cave entrance: a skylight that lets sunlight shine down, creating the phenomenon of 'clouds inside the cave'.
Underground tropical forest: a unique ecosystem inside the cave with its own plants, animals, and climate.
Underground river and sandbanks: mysterious currents, fine white sandbanks lying beneath a ceiling hundreds of meters high.
Hand of Dog: a giant stalagmite shaped like a dog — the symbol of Son Doong.
Expedition itinerary
6 days 5 nights: trekking through the jungle, crossing streams, climbing rock faces with ropes, sleeping in tents inside the cave, with meals served by a professional porter and kitchen team. All supplies and equipment are prepared by Oxalis — the sole organizer.
Why inquire?
Limited slots, short season (January–August), good health required, and booking months in advance. Vibe Vietnam Tour supports you: itinerary consultation, slot confirmation with Oxalis, arranging shuttle and hotels before/after the tour, and extending to explore Central Vietnam.
Highlights
Son Doong Cave — the world's largest, limited slots
Giant cave entrance, 'clouds inside the cave', underground tropical forest
Underground river, white sandbanks, bivouac inside the cave
6-day expedition with professional Oxalis team
Meals, tents, and safety equipment prepared by the porter team
Vibe Vietnam Tour supports consultation, slots, vehicles, and hotels before/after
Detailed Itinerary
Day 1
Dong Hoi → Phong Nha — Expedition Preparation
Pick up at Dong Hoi airport/station, transfer to Phong Nha. Check in at the hotel, safety briefing, and gear check. Dinner and early rest to prepare for the long trekking day.
Day 2
Trek to Hang En — first night in the cave
Trek through the jungle, cross streams to Hang En — the third largest cave in the world. Visit the cave, swim in the stream, and sleep in tents inside the cave.
Day 3
Hang En → Son Doong entrance
Trek further to the entrance of Son Doong. Cross the underground river, climb the rock face with ropes (90m) to descend to the cave floor. Camp the first night inside Son Doong.
Day 4
Explore deep inside Son Doong
Move deeper into the cave across sandbanks, underground tropical forest, admire 'clouds inside the cave' and Hand of Dog. Second night inside the cave.
Day 5
Son Doong → Hang En → Phong Nha
Climb out of Son Doong with ropes, trek back to Hang En, then return to Doong village/Phong Nha. Dinner at a restaurant, rest at the hotel.
Day 6
Phong Nha → Dong Hoi — Departure
Breakfast, free time. Transfer to Dong Hoi airport/station. End of the 6-day journey.
Included / Not Included
Included
- Consultation and slot confirmation for Son Doong with Oxalis
- Son Doong expedition 4N5D organized by Oxalis
- Meals, tents, sleeping bags, and safety equipment during the tour
- Porter, guide, cave expert
- Insurance as per Oxalis regulations
- Shuttle between Dong Hoi and Phong Nha
- 1 night at Phong Nha hotel before the tour
- 1 night at Phong Nha hotel after the tour
Not included
- Flights/vehicle tickets to Dong Hoi
- Personal equipment: trekking shoes, backpack, swimwear, sunscreen
- Drinks not included in the program
- Tips for guide/porter
- Hotel upgrades in Phong Nha
- Extended tours in Central Vietnam after Son Doong