Phong Nha Cave Guide: Quang Binh’s UNESCO Underground River Adventure
Overview
Explore Phong Nha Cave in Quang Binh’s Phong Nha-Ke Bang! Discover the world’s longest underground river, costs, tours, and Legend Travel Group’s sustainable adventures. Book now!

What to Experience at Phong Nha Cave
Phong Nha Cave offers two main eco-friendly experiences, blending accessibility with adventure:
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Standard Boat Tour (1.5 km):
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Glide 1.5 km along the underground river on an electric boat, best at 8:00 AM, costing $6–$8 (150,000–200,000 VND) per person or $15 (375,000 VND) per boat (up to 12 people). Marvel at Bi Ky and Co Tien chambers’ glowing stalactites.
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Eco-Friendly Note: Electric boats reduce emissions; guided tours protect formations.
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Tip: Book via Legend Travel Group’s Phong Nha Eco-Tour ($60–$90); share boats to save costs.
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Adventure Kayaking Tour (4.5 km):
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Kayak and trek 4.5 km deep into the cave, best at 8:00 AM, costing $70 (1,750,000 VND) for a 1-day tour (8:00 AM–5:00 PM). Includes kayaks (2 people per boat), helmets, headlamps, life jackets, lunch, a guide, and 3–5 porters.
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Eco-Friendly Note: Small groups; waste removal enforced.
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Tip: Book via Legend Travel Group’s Adventure Combo Tour ($100–$150); wear sturdy shoes and swimwear.
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Best Time to Visit Phong Nha Cave

Visit from November to April for dry, cool weather (18–28°C or 64.4–82.4°F), ensuring safe river levels for boat and kayak tours. The rainy season (May–October), with temperatures of 24–34°C (75.2–93.2°F), risks flooding, closing the cave entrance in September–October due to high Son River levels. Early mornings (7:00–10:00 AM) offer cooler conditions and fewer crowds (500–1,000 daily visitors on weekdays vs. 2,000–5,000 on weekends), especially during Tet (January/February). Book standard tours on-site or adventure tours 1–2 weeks ahead for peak months (March–April).
How to Get to Phong Nha Cave
Phong Nha Cave, 5 km from Phong Nha village and 55 km from Dong Hoi, is easily accessible:
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By Private Car: Drive 1 hour from Dong Hoi or 15 min from Phong Nha, costing $20–$30 round-trip (500,000–750,000 VND) for 4 people. Book via Legend Travel Group.
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By Electric Taxi (Xanh SM): Eco-friendly VinFast taxis from Dong Hoi (1 hour, $15–$20 one-way or 375,000–500,000 VND; $30–$40 round-trip) or Phong Nha (15 min, $5–$8 or 125,000–200,000 VND). Use Xanh SM app.
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By Motorcycle: Ride from Dong Hoi (1 hour, $3–$5 fuel or 75,000–125,000 VND) or Phong Nha (15 min, $1–$2 or 25,000–50,000 VND); rental $5–$8/day (125,000–200,000 VND). Helmets mandatory (fines up to $40 or 1,000,000 VND).
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By Bicycle: Rent in Phong Nha ($2–$5/day or 50,000–125,000 VND), 30–45 min, for fit travelers.
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By Public Bus: Bus from Dong Hoi to Phong Nha (1 hour, $1–$2 or 25,000–50,000 VND), then walk or taxi (5 min, $2–$3 or 50,000–75,000 VND).
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By Guided Tour (Legend Travel Group): Group bus from Dong Hoi (1 hour, $8–$12 or 200,000–300,000 VND/person for 20+), includes guide and cave entry.
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From Hanoi: Train to Dong Hoi (9–11 hours, $15–$25 or 375,000–625,000 VND) + taxi ($15–$20); flight to Dong Hoi (1 hour, $40–$80 or 1,000,000–2,000,000 VND) + taxi. Navigation Tip: Save “Phong Nha Cave, Quang Tri” in offline maps (Maps.me); follow Son River signs. Parking: $0.40–$0.80 (10,000–20,000 VND).
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Eco-Friendly Note: Xanh SM taxis and electric boats reduce emissions; guided tours minimize impact.
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Safety: Wear helmets on motorbikes; confirm taxi fares.
What to Bring for Your Phong Nha Cave Adventure

Pack these essentials for a sustainable visit:
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Clothing: Light layers, sturdy shoes for adventure tours, swimwear for kayaking; waterproof jacket ($2–$5 or 50,000–125,000 VND) for rainy season; hat for sun.
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Sun Protection: SPF 50+ sunscreen, sunglasses.
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Travel Essentials: Reusable water bottle, hand sanitizer ($0.50 or 12,500 VND), small towel.
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Tech Gear: Smartphone with Grab/Xanh SM apps, offline maps, portable charger; Vietnamese SIM card ($5–$10 or 125,000–250,000 VND).
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Outdoor Gear: Small backpack, headlamp for adventure tour (provided or $5–$10), waterproof bag ($3–$7 or 75,000–175,000 VND).
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Documents: Passport copy, travel insurance, VND (10,000–50,000 notes).
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Eco-Friendly Items: Reusable tote for gear ($1–$2 or 25,000–50,000 VND); biodegradable wipes.
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Extras: Snacks for adventure tours; cash for vendors or tips ($0.50–$1 or 12,500–25,000 VND).
Tip: Carry small VND notes for entry ($3–$7), boat fees ($6–$15), or snacks ($0.50–$2); secure valuables in waterproof bags.
Costs and Budget Planning
Costs for Visiting Phong Nha Cave
Activity and Entry Fees
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Park Entry: $3–$7 (75,000–175,000 VND) adult; $1.50–$3.50 (37,500–87,500 VND) child under 1.3m.
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Standard Boat Tour (1.5 km): $6–$8 (150,000–200,000 VND) per person or $15 (375,000 VND) per boat (up to 12).
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Adventure Kayaking Tour (4.5 km): $70 (1,750,000 VND), includes kayak, gear, lunch, guide, porters.
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Local Meals (e.g., Bánh Lọc): $1–$3 (25,000–75,000 VND).
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Drinks (Water, Sugarcane Juice): $0.30–$1 (7,000–25,000 VND).
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Souvenirs (e.g., Tai Crafts): $2–$6 (50,000–150,000 VND).
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Guided Eco-Tour: $20–$40 (500,000–1,000,000 VND).
Transportation (Round-Trip, from Dong Hoi)
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Private Car: $20–$30 (500,000–750,000 VND).
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Xanh SM Electric Taxi: $30–$40 (750,000–1,000,000 VND).
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Motorcycle: $3–$5 (75,000–125,000 VND) fuel; rental $5–$8/day.
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Public Bus + Taxi: $5–$7 (125,000–175,000 VND).
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Bicycle (from Phong Nha): $2–$5/day (50,000–125,000 VND).
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Guided Tour Bus: $8–$12 (200,000–300,000 VND)/person.
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Hanoi to Phong Nha: $17–$100 (425,000–2,500,000 VND, train/flight + taxi).
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Parking: $0.40–$0.80 (10,000–20,000 VND).
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SIM Card: $5–$10 (125,000–250,000 VND).
Total Daily Cost (Per Person)
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Budget: $15–$25 (bus, standard tour, meals).
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Mid-range: $40–$70 (taxi, adventure tour, homestay).
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Luxury: $80–$120 (private car, guided tour, resort).
Tip: Budget for entry ($3–$7), tours ($6–$70), and transport ($3–$40); carry cash for vendors (no cards accepted).
Practical Tips for Visiting Phong Nha Cave

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Timing: Visit 7:00–10:00 AM for cool weather; November–April for river access. Weekdays for fewer crowds (500–1,000 vs. 2,000–5,000 on weekends). Book adventure tours 1–2 weeks ahead.
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Activities: Reserve standard tours on-site or adventure tours via Legend Travel Group. Wear sturdy shoes for kayaking; bring swimwear for adventure tours.
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Sustainability: Use electric boats; stay with guides to protect formations. Support local vendors for meals ($1–$3) or crafts ($2–$6).
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Navigation: Save “Phong Nha Cave, Quang Tri” in offline maps; follow Son River signs. Avoid night travel due to rural roads.
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Safety: Wear provided helmets/life jackets for adventure tours; secure valuables. Confirm tour inclusions; carry a headlamp.
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Weather: Dry season for safe boating; rainy season needs rain gear ($2–$5) and waterproof bags ($3–$7). Check AccuWeather.
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Cultural Respect: Say “xin chào” to locals; respect cave sanctity. Avoid touching stalactites; tip guides $0.50–$1 (12,500–25,000 VND).
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Health: Drink bottled water ($0.50 or 12,500 VND); carry hand sanitizer.
Legend Travel Group’s Sustainable Tours
Our eco-friendly tours showcase Phong Nha Cave’s wonders:
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Phong Nha Eco-Tour ($60–$90/person, 1 day): Electric taxi from Dong Hoi to Phong Nha Cave and Tien Son, with lunch ($1–$3). Includes guide, transport, tickets.
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Adventure Combo Tour ($100–$150/person, 2 days): Phong Nha adventure tour, Dark Cave ziplining, Tai homestay. Includes meals, guide.
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Central Vietnam Explorer ($300–$450/person, 4 days): Private car to Phong Nha, Hue, Hoi An, homestays, with Phong Nha Cave tour. Includes meals, eco-transfers. Prices include guides, eco-transfers, fees. 15% off for groups of 8+! Book now via links!
Conclusion
Phong Nha Cave in Quang Binh’s Phong Nha-Ke Bang National Park, with tours from $6–$70 (150,000–1,750,000 VND), is a UNESCO-listed marvel, enchanting 1.5 million visitors yearly, 55 km from Dong Hoi. Its record-breaking underground river, vibrant stalactites, and sustainable practices like electric boats create an unforgettable adventure. Legend Travel Group’s Phong Nha Tours guide you through this geological masterpiece, ensuring a sustainable Phong Nha Travel experience with eco-friendly tours. Don’t miss out—browse our featured tours and book your eco-journey today!
Ready to explore Phong Nha Cave’s underground wonders? Reserve your sustainable tour with Legend Travel Group and embark on an unforgettable adventure!
Author Bio: Written by Tony Bùi, with over 20 years of experience in the travel industry, guiding 100,000+ travellers across Southeast Asia. This guide draws from firsthand insights, guest feedback from Legend Travel Group surveys.
Sources: By Tony Bùi at Legend Travel Group
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