Last updated: May 2026 — Cave entry fees, hours, and tour prices verified
Most tourists see two. Sometimes three. Often just one.
That’s fine — the caves in Phong Nha reward quality over quantity. One full day in Paradise Cave is more memorable than rushing four caves in a day. But knowing which caves to prioritize, which are worth the entry fee, and which are tourist traps dressed up in UNESCO branding? That takes a guide that goes beyond “Phong Nha is amazing.”
Here’s every cave worth your time, ranked honestly.
Paradise Cave (Thiên Đường Cave) — The Best Cave You Can Actually Enter
The smell hits you first at the entrance. Cool, mineral, slightly sulfurous — the air coming out of a cave that extends 31 kilometers into the mountain and hasn’t seen direct sunlight in millions of years. Then the ramp descends and the chamber opens and you understand why early explorers kept walking.
Paradise Cave (Động Thiên Đường — say: dong tee-en doong) was discovered in 1990 and opened to tourists in 2010. The public section runs 1 kilometer into the cave — a wooden boardwalk through a cathedral of stalactites and stalagmites, some reaching 40 meters high. The light is theatrical (artificial, tastefully done). The formations are genuinely extraordinary — not “nice cave” extraordinary, but “this took five million years to grow” extraordinary.
At the 1km mark, the boardwalk ends and the tourist section stops. Beyond that point, 30 more kilometers of cave continue in darkness, accessible only via multi-day adventure tours. The public 1km is enough to justify the trip from Hue or Da Nang.
Entry fee: 250,000 VND (~$10) including the electric buggy from the ticket gate to the cave entrance (1.5km).
Opening hours: 7am–4pm daily.
Time needed: 2–3 hours total (including buggy, walk in, boardwalk, walk out).
GPS: 17.5586° N, 106.2349° E
★Jake’s Pick
Go on a weekday and arrive at 7am when it opens. The cave gets crowded by 10am with tour groups. At 7am you can walk the boardwalk in near-silence — the only sound is water dripping from the formations and your own footsteps. That is the correct way to experience Paradise Cave.
Dark Cave (Hang Tối) — The Most Fun Cave in Vietnam
Paradise Cave is the beautiful one. Dark Cave is the one you’ll talk about for years.
The entry involves a zip line across the Chay River directly into the cave mouth. Inside: total darkness (bring the headlamp they give you), a mud lake that requires full submersion to cross, an underground swimming section, and a kayak exit back out through the cave entrance. The whole thing takes about two hours and ends with most of your clothes covered in white limestone mud that takes three showers to fully remove.
Dark Cave (Hang Tối — say: hung toy) is 5km from the main Phong Nha village. The experience is run by the national park operator. It’s the right amount of adventure — structured enough to be safe, unstructured enough to feel real.
Entry fee: 450,000 VND (~$18) including all equipment (zip line, kayak, headlamp).
Hours: 8am–4pm. Last entry 2pm — the experience takes 2+ hours.
GPS: 17.5831° N, 106.2762° E
→Who It’s For
Anyone who can swim and isn’t claustrophobic. The cave sections involve crawling through narrow passages and swimming in complete darkness — exciting for most people, deeply unpleasant for anyone with confined-space anxiety. Not suitable for young children (under 10) or non-swimmers.
Phong Nha Cave — The Original, The Tourist
Phong Nha Cave (Động Phong Nha — say: dong fong nya) is the cave the park is named after and the reason most people come. The tour involves a 30-minute boat ride up the Son River through towering karst cliffs, then into the cave for a 600-meter guided exploration by electric boat.
The honest review: it’s the most accessible cave and the most crowded cave. The boat tour is pleasant. The cave itself is impressive but doesn’t compare to Paradise Cave in scale or drama. The boatswomen who row the boats sing traditional folk songs — that detail is genuinely nice.
Worth doing? Yes, on a morning when you don’t have another cave scheduled. It gives context for the river culture and the karst geography that the other caves don’t. Skip it if you only have one day and have to choose between this and Paradise Cave.
Entry fee: 150,000 VND (~$6) plus mandatory boat ticket 250,000 VND (~$10) per boat (up to 14 people — if you’re going solo or in a small group, you’ll share).
Hours: 7am–5pm.
GPS: 17.5913° N, 106.2876° E
Son Doong Cave — The World’s Largest, The $3,000 Question
Sơn Đoòng (say: shun dwong) is the largest cave in the world by volume. Large enough that a 747 could fly through the main chamber. Large enough to have its own weather system — clouds form inside the cave. Large enough that entire ecosystems exist in the sunlit sections where the roof has collapsed.
It’s also $3,000 USD per person for a 4-day tour, with a waitlist that runs 12–18 months ahead. Oxalis Adventure Tours (the only company licensed to run Son Doong tours) limits entries to 1,000 visitors per year to protect the cave.
Is it worth $3,000? The people who’ve done it say yes, unanimously. It’s one of the most extreme and extraordinary natural environments accessible to non-cavers in the world. The price includes camping inside the cave, technical rope sections, expert guides, and support staff.
For everyone else: Hang En and Tu Lan cave system offer similar “big cave adventure” experiences at 2–5% of the cost. Not Son Doong — but still genuinely extraordinary.
Son Doong booking: oxalisadventure.com — book 12–18 months ahead. 2026 slots sold out. Check 2027 availability.
Price: $3,000 USD per person for 4-day tour.
⚠Real Talk
The hype around Son Doong is real and justified. But most of the travelers who tell you “you have to do Son Doong” have never done it themselves. If $3,000 and a year-long waitlist are not realistic for your trip, Paradise Cave is the next-best experience in the park — accessible, extraordinary in its own right, and 3% of the price.
Tu Lan Cave System — The Adventure Alternative
If Son Doong isn’t happening and Dark Cave feels too light, Tu Lan is the middle option. A multi-day trek through jungle and cave systems in the national park, with underground river crossings, jungle camping, and cave sections that require swimming with headlamps through narrow passages.
Tu Lan tours run 2–4 days. Oxalis runs them; several other operators have similar routes at lower price points. The 2-day option costs 3,500,000–5,000,000 VND (~$133–190). The 4-day option costs up to $500 but includes more remote cave systems.
Tu Lan rewards people who want genuine adventure without Son Doong’s price tag. It’s physically demanding — expect 15–20km of jungle walking per day, cold underground river swims, and sleeping in tents near cave entrances. Not for casual visitors who came for a day trip.
Hang En Cave — Overnight in the Third Largest Cave
Hang En is the third largest cave in the world and the approach route to Son Doong. It’s accessible as a 2-day overnight trek — you camp inside the cave on a white sand beach, with a sinkhole opening above that lets sunlight pour into the otherwise-dark chamber.
The experience: jungle trekking through the national park on day one, descent into Hang En, camping on the sand beach inside with the cave river running beside your tent, swimming in the cave pool, then trekking back out on day two.
Price: 7,000,000–9,000,000 VND (~$266–342) per person for the 2-day tour.
Availability: Easier to book than Son Doong — 2–4 weeks lead time typical. Oxalis and several other operators run this route.
Hang Va and Other Specialist Caves
Beyond the main caves, the Phong Nha system includes Hang Va (noted for its extraordinary calcite cave pearls — rare formations), Hang Ba (a river cave accessible by kayak), and several others that require specialist guide arrangements. These are for serious cave enthusiasts, not casual visitors adding a cave day to a Vietnam itinerary.
Practical Notes: Getting Around Phong Nha
The caves are spread across 15–20km of national park. You need wheels.
Motorbike rental: 120,000–180,000 VND/day (~$4.60–6.80) from guesthouses in Phong Nha village. Most caves have clear signage from the main road. The best way to visit Paradise Cave and Dark Cave on the same day — go Paradise at 7am, Dark Cave after lunch.
Guided day trips: 350,000–600,000 VND per person (~$13–23) from Phong Nha village or from Hue/Da Nang. Includes transport and guide but adds group scheduling constraints. The Phong Nha tours guide covers the best operators and how to book.
From Hue: 160km north, 3–4 hours by private car or bus. Hue to Phong Nha transport guide has the full breakdown.
Phong Nha village: Small, easy to navigate. Guesthouses, restaurants, and tour operators all within 1km of each other on the main road. Stay here rather than in Dong Hoi city (35km away) — the village puts you 5 minutes from the cave entrances instead of 45.
ℹKnow Before You Go
The national park charges a separate conservation fee (80,000 VND ~$3.20) on top of individual cave entry fees. It’s paid at the park gate and covers the day. Don’t lose the ticket — you’ll need it for each cave entrance. Cave entries and boat fees are paid separately at each site.
2-Day Phong Nha Itinerary
Day 1 — Paradise Cave: 7am entry (beat the groups), 2–3 hours inside, back to village for lunch. Afternoon: rent a motorbike and ride to the Chay River viewpoint or the botanical garden. Dinner at the village restaurants — grilled local fish (cá nướng — say: ka noong) is the regional specialty.
Day 2 — Dark Cave + Phong Nha: Dark Cave at 8am (zip line is better in morning light). 2–3 hours including mud bath and kayak. Back to village for lunch and a shower (you’ll need it). Afternoon: Phong Nha Cave boat tour — 2pm departure means fewer crowds than the morning runs. River scenery on the way back at golden hour.
If you have a third day: Tu Lan day trek or a motorbiking loop through the national park toward the Laos border — the road through the park is empty and extraordinary.
What Travelers Actually Say: The Consensus
Paradise Cave consistently outperforms expectations across every traveler report I’ve read. People who came skeptical (“how good can a cave be”) leave calling it one of the highlights of their Vietnam trip. The 7am entry is the single most-cited practical tip — travelers who arrived at 10am report feeling rushed and crowded; those who arrived at 7am describe a meditative experience in silence.
Dark Cave divides people exactly along the lines you’d expect: adventure travelers love it, mild-activity tourists find the mud bath a bit much. The zip line is universally praised. The part where you swim through total darkness in a narrow passage is where reactions diverge. If you’re booking for a group with mixed adventure tolerance, know this going in.
The Son Doong FOMO is real and mostly unnecessary. Travelers who went on Hang En instead (a fraction of the cost) report being just as moved by the cave experience. The gap isn’t in experience quality — it’s in scale. Son Doong is bigger. Hang En is still extraordinary.
Insider Tip
The conservation fee (80,000 VND/~$3.20) is charged separately at the park gate and must be paid before your first cave of the day. If you’re doing Paradise Cave and Dark Cave on the same day, you only pay the conservation fee once. Keep the receipt — staff at each cave entrance will ask for it.
Phong Nha Caves FAQ
How many days do I need in Phong Nha?
Quick Answer
Two days minimum to see Paradise Cave and Dark Cave properly. One day if you’re passing through and can only do Paradise Cave (it’s worth the detour). Three days opens up Tu Lan, jungle biking routes, and Hang En overnight if you have the budget.
Is it worth going to Phong Nha from Hue?
Quick Answer
Yes — 160km, 3–4 hours. Worth it as an overnight trip, not as a day trip. If you’re traveling Hue to Hoi An, Phong Nha makes a natural 2-night stopover — the drive through the national park is itself spectacular.
How do I get to the caves in Phong Nha without a tour?
Rent a motorbike in Phong Nha village (120,000–180,000 VND/day/~$4.60–6.80). All major caves (Paradise, Dark, Phong Nha itself) are accessible independently — buy your own ticket at the gate. You don’t need a guide for Paradise Cave or Phong Nha Cave. Dark Cave requires no guide either — the activity is fully staffed at the venue. Tu Lan, Hang En, and Son Doong require licensed guides by law.
What should I wear to the caves?
Paradise Cave: comfortable walking shoes (the boardwalk is smooth but wet), a light layer (cave temperature is a constant 20–22°C regardless of outside heat). Dark Cave: bring a change of clothes — you will be covered in mud. Swimwear under your clothes. Leave valuables at the guesthouse. Phong Nha Cave: no requirements, it’s a boat tour.
