Son Doong Expedition — 6 Days Exploring the World's Largest Cave
Quang Binh · Phong Nha · Oxalis · 6-Day Expedition
Dong Hoi → Phong Nha → Bo Trach → through the forest → Son Doong → Phong Nha → Dong Hoi
Overview
Organize a 6-day Son Doong expedition through the licensed operator Oxalis. The world's largest cave with an underground tropical forest, an underground river, and massive 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 on a limited basis since 2013, only a few hundred people 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 in, 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 under a cave 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, meals served by a professional porter and kitchen team. All supplies and equipment are prepared by Oxalis — the exclusive operator.
Why inquire?
Limited slots, short season (January–August), good health required, and must be booked months in advance. Vibe Vietnam Tour supports you: itinerary consultation, slot confirmation with Oxalis, arranging transfers, pre/post tour hotels, and expanding your Central Vietnam exploration.
Highlights
Son Doong Cave — 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, safety equipment prepared by porter team
Vibe Vietnam Tour supports inquiry, slots, transfers, pre/post hotels
Detailed Itinerary
Day 1
Dong Hoi → Phong Nha — Expedition Preparation
Pick up at Dong Hoi airport/station, transfer to Phong Nha. Check in hotel, safety briefing, gear check. Have dinner and rest early to prepare for the long trekking day.
Day 2
Trek to Hang En — first night in a cave
Trek through the jungle, cross streams to Hang En — the world's third largest cave. Explore the cave, bathe in the stream, sleep in tents inside the cave.
Day 3
Hang En → Son Doong entrance
Trek further to the Son Doong entrance. Cross the underground river, climb a 90m rock face with ropes to descend to the cave floor. First night camping inside Son Doong.
Day 4
Deep exploration inside Son Doong
Move deep into the cave across sandbanks, through the underground tropical forest, admire 'clouds inside the cave' and the 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, overnight at hotel.
Day 6
Phong Nha → Dong Hoi — Departure
Breakfast, free time to rest. 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, safety equipment during the tour
- Porters, guides, cave experts
- Insurance as per Oxalis regulations
- Transfer Dong Hoi – Phong Nha
- 1 night Phong Nha hotel before the tour
- 1 night Phong Nha hotel after the tour
Not included
- Flights/transport to Dong Hoi
- Personal equipment: trekking shoes, backpack, swimwear, sunscreen
- Drinks outside the program
- Tips for guides/porters
- Hotel upgrade in Phong Nha
- Central Vietnam tour extension after Son Doong