Spend three days trekking, rappelling and swimming through Hung Thoong’s underground rivers and jungle lakes in Phong Nha-Ke Bang. This expedition combines multi-pitch cave work with remote basecamp nights for adventurous, swim-capable travelers.
More ways to explore the area's outdoor wonders
Morning light slices through the forest canopy as the group moves along Road 20 Victory, boots sinking into leaf litter and the Hung Thoong River murmuring nearby, daring the party to press deeper.
Difficulty
challenging
Duration
3 days
Fitness Level
Should have good cardiovascular fitness, comfortable swimming ability, and be capable of sustained trekking with a daypack.
Wildlife
History
Phong Nha-Ke Bang was inscribed as a UNESCO World Heritage site for its karst landscape and cave systems; wartime routes like the Ho Chi Minh Road cross nearby valleys.
Conservation
Cave formations are fragile—follow guide instructions, pack out all waste, and avoid using sunscreen or insect repellent before entering cave pools to protect water quality.
Reserve your spot on the Hung Thoong cave | Stalactites, Underground River Phong Nha |3D2N today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Expect water crossings
Several swims including a 1.2km swim into Tron Cave; bring a wetsuit or quick-dry layers and secure dry bags for electronics.
Wear protective lighting & helmet
A reliable headlamp and helmet are essential for caves and abseils; bring spare batteries.
Train for sustained effort
Prepare with hikes carrying a loaded daypack and swim practice; sustained trekking and repeated rappels are on the itinerary.
Respect cave formations
Avoid touching stalactites and stay on guide-marked routes—oils from skin damage fragile mineral surfaces.
Helmet with headlamp
Protects your head in low passages and provides hands-free lighting for caves and rappels.
Sturdy, quick-dry hiking boots
Offers traction on slippery limestone trails and protection on uneven jungle terrain.
Dry bag (10–20L)
Keeps clothing, electronics and documents dry during swims and river crossings.
Lightweight wetsuit or thermal top
Useful for prolonged swims or colder seasons to maintain core temperature.
winter