Paradise Cave, Phong Nha in 2026: Asia’s longest dry cave

One thing to know before you go: the boardwalk is the tourist kilometer. If you want the wild part, with mud, headlamps and unlit chambers, you need the guided 7 km tour. Oxalis runs it and agencies in town sell it too. Prices, logistics and a straight comparison with Phong Nha Cave are below.

What Paradise Cave is

Động Thiên Đường (Paradise Cave) is a dry karst cave inside Phong Nha-Kẻ Bàng National Park, a UNESCO World Heritage Site since 2003. Since the administrative reform of 1 July 2025 the official address is Phong Nha commune, Quảng Trị province. Quảng Bình was merged into Quảng Trị, so older guides and booking sites still say "Bo Trach, Quang Binh". It’s about 20 km from Phong Nha town and 65 km from Dong Hoi airport.

The cave is 31.4 km long. The ceiling is around 60 m high and the passage is 30–100 m wide, up to 150 m in places. Inside it stays at 18–22 °C with 80–90% humidity all year.

The lighting changes as you walk: white along the main stretch, warm amber on the big formations, cooler blues further in. It feels like a Gothic cathedral with the walls and roof taken away.

• Paradise Cave (Động Thiên Đường): 31.4 km long, 1 km boardwalk — 270,000 VND incl. buggy, 07:00–16:00
• Phong Nha town (xã Phong Nha): Where everyone stays, about 20 km to the cave — Hostels and bike rental
• Phong Nha Cave (Động Phong Nha): Boat along the Son River — 150,000 VND + boat 750,000 VND per 12 people
• Dark Cave (Hang Tối): On the way back from Paradise — Zipline and mud bath, 450,000 VND
• Dong Hoi Airport (Sân bay Đồng Hới (VDH)): 65 km to the cave — 75–80 minutes by car

A short history: how "Paradise" was found

Cavers from the British Cave Research Association (BCRA) have been working in these mountains with Hanoi University since 1990. The forest stayed hard to reach for a long time: the Ho Chi Minh Trail ran through it, and unexploded ordnance kept turning up for decades after the war.

The entrance to Paradise Cave was found in 2005 by Ho Khanh, the same local man who later led the British to Son Doong. Between 2005 and 2010, BCRA expeditions led by Howard Limbert surveyed 31.4 km of passages, and Paradise became the longest dry cave in Asia. The Vietnamese name, Thiên Đường, means "Paradise", given for the formations.

In September 2010 the Vietnamese company Trường Thịnh Group opened the cave to the public with a 1 km boardwalk, stairs and lighting. In 2019 the Asia Record Organization added another title: the most impressive dry cave system for stalactites and stalagmites.

Son Doong, the world’s largest cave, is in the same park. Ho Khanh stumbled on its entrance back in 1990, but the British only got inside in 2009. So Paradise opened to tourists before its famous neighbour, and it’s still far easier to visit.

How to get to Paradise Cave

Most people sleep in Phong Nha town and do Paradise as a half day. The cave is about 20 km away, 25–30 minutes on paved road along the western branch of the Ho Chi Minh Highway.

Distances

For your GPS: Km 16, Đường Hồ Chí Minh nhánh Tây, Phong Nha commune, Quảng Trị. Search "Paradise Cave" in Google Maps or use 17.5192, 106.2230.

From Phong Nha town: four options

Rent a motorbike. 150,000–200,000 VND (~$6–8) a day. The road is flat and easy, with cafes and fuel on the way. The catch is heat: March to July it’s 33–35 °C in the sun, so bring gloves, a cap and sunscreen. Legally you need a license valid in Vietnam (an IDP on the 1968 convention plus your home license); rental shops rarely ask, but your travel insurance will.

Taxi or car with driver. 400,000–500,000 VND (~$15–19) return. Arrange it at your hostel: the driver waits in the parking lot for about three hours. Grab coverage in town is thin, so the reception’s phone list is your friend.

Group tour. A "Paradise Cave + Dark Cave" half day costs $25–35 per person, with transport, tickets and sometimes lunch. Minivans leave town around 8:00 and 13:00. The fixed schedule is the main downside.

Bicycle. Plenty of hostels and homestays lend bikes for free. But 40 km return in the heat is exercise, not sightseeing. It works in December and January, when it’s 24–26 °C.

From Dong Hoi and the airport

1. Transfer to Phong Nha town: 400,000–500,000 VND (~$15–19), book through your hostel.
2. Taxi straight to the cave: 800,000–1,000,000 VND (~$30–38), about 80 minutes.
3. Day tour from Dong Hoi: $35–50 per person with lunch and return transfer.

From Hanoi or Hue the classic route is the overnight Reunification Express to Dong Hoi, then a taxi or pre-booked transfer. Flying Hanoi–Dong Hoi with Vietnam Airlines or Vietjet takes about 1.5 hours, with fares from around 800,000 VND (~$30). Most nationalities enter on an e-visa from evisa.gov.vn; some passports get visa-free days, so check yours before you book.

Arriving in Vietnam: how the arrival QR and entry work

Prices in 2026

Standard visit

The electric buggy from the parking lot to the foot of the hill (1.6 km) is now part of the ticket. So the basic cost is 275,000 VND (~$10.50) per person with motorbike parking, and a family of two adults and two kids between 1.1 and 1.3 m pays 830,000 VND (~$32).

Guided tours (7 km in)

On the 7 km tour you’re picked up in Phong Nha town around 7:30. You walk the boardwalk first, then the guide unlocks the gate at the end and you climb down onto the cave floor. After that it’s several hours of mud and rock by headlamp, lunch underground and the walk back. Plan on about nine hours door to door.

Oxalis asks you to book at least a day ahead and takes groups of two or more, aged 16 to 65. Half-day tours are easy to book the evening before. Agencies in town also sell shorter 3–4 km versions; check the price and what’s included with whoever sells it.

What’s inside: the 1 km boardwalk

A standard visit takes 2–3 hours from parking lot back to parking lot. Inside it’s an easy walk on a lit boardwalk, with no crawling or scrambling. You don’t need to be fit, but your knees should be fine: there’s a long stone staircase to the entrance.

Step by step:

1. Parking and ticket office (07:00–16:00). Buy your ticket; the buggy is included. You can walk the 1.6 km uphill through the forest instead, but in the heat that’s an extra 20 minutes of climbing.
2. Electric buggy (1.6 km). A few minutes’ ride to a platform with an info board and toilets.
3. Stairs to the entrance. Around 500 m uphill on a stone staircase, 524 steps by Oxalis’s count. With stops at the viewpoints, 20–25 minutes.
4. The entrance. A wooden deck over the jungle, then roughly 300 wooden steps down to the cave floor. A guard checks tickets here.
5. The boardwalk, 1 km. It runs through the middle of the chamber, past stalactites and stalagmites that took millions of years to form. Named formations have signs, like Mâm Xôi (the Sticky Rice Tray), Quan Âm (the Goddess of Mercy) and Tháp Trầm Hương (the Agarwood Tower).
6. The end and back. A locked gate marks the end of the boardwalk; the 7 km tour goes through it. You walk back the same way, and the formations look different from the other side.

Outside it can be 28–34 °C; inside it’s 18–22. You’ll notice the drop straight away, and after ten minutes on the boardwalk you may want a layer. The echo carries: other groups’ conversations reach you from 50 m away, which is why staff ask people to keep their voices down.

Signs and leaflets are in English and Vietnamese. TripAdvisor reviewers tend to say the same two things: give it at least two hours, and the cool air and echo are what stay with you.

The downside of the standard route is that it’s out and back. After the first kilometer, the return trip feels like a replay. People who want more come back for the 7 km tour, or move on to the overnight expeditions.

Boardwalk vs. the 7 km adventure

Past the gate at the end of the boardwalk, everything Trường Thịnh built stops. Beyond it is wild cave: clay slopes, dry riverbeds and huge unlit chambers. Only guided groups go there, and they’re a tiny share of Paradise Cave’s visitors.

Which one is for you?

Families with kids and older parents should take the 1 km boardwalk. It’s safe and dramatic, and inside it’s almost flat.

If you’ve already done the boardwalk, or you’re warming up for a bigger expedition, take the 7 km. It’s a full day in wild cave with lunch underground, and a decent rehearsal for Hang En or Son Doong.

Best time of day and season

Paradise Cave is dry, so it’s open all year. Son Doong only runs January to August, and Tu Lan closes in the rains. Open and pleasant aren’t the same thing, though.

By time of day

Get there when it opens at 7:00. You’ll have the boardwalk both ways before 9:00. The first buses from Hue (they leave at about 5:30) roll in around 9:30.

By season

The park doesn’t close in September and October, but check the typhoon forecast two days before. If it’s pouring over Phong Nha, local riders will tell you to wait: the hill section gets slippery.

More wild places: Vietnam’s national parks

What to bring

It’s cool and damp inside and hot outside, which catches people out. The usual mistake is shorts and flip-flops, followed by shivering on the boardwalk.

For the 7 km tour, on top of the list above:

Leave behind

• Umbrella: it doesn’t rain inside, and it gets in the way on the stairs.
• Tripod: staff will ask you to put it away at busy times; there isn’t room.
• Big luggage: leave it at your hostel, there’s no left-luggage at the ticket office.
• Drone without a permit: flying over the park needs park approval, and unpermitted drones get confiscated.

Packing for the whole trip: Vietnam packing list

Rules inside the cave

Phong Nha-Ke Bang is a UNESCO site, and the rules are stricter than in commercial caves elsewhere in Southeast Asia. The basics are posted in English before the boardwalk.

Kids of any age are allowed in, but five is the realistic minimum. Younger children struggle on 500 steps and won’t remember much. Strollers can’t go in. A baby carrier works, though after two hours with 10 kg on your back you’ll have views on that. For the bigger picture, see our guide to Vietnam with kids.

Oxalis takes people aged 16 to 65 on the 7 km tour. Younger teens won’t be accepted, however grown-up they look.

Paradise Cave vs. Phong Nha Cave

The question everyone in Phong Nha asks: if you only have one day, Paradise or Phong Nha Cave? It depends on what you want.

If you only have one day:

• Pick Paradise if scale matters, you like photography and 500 steps don’t scare you.
• Pick Phong Nha Cave if you’re with a small child, older parents, or dodgy knees. The boat ride is memorable in its own way, just less jaw-dropping.
• With two days, do both. Paradise in the morning when it opens, lunch in town, the Phong Nha boat after 14:00. Last boats go in the afternoon; check the time at the pier the evening before.

All the caves compared: Phong Nha-Ke Bang caves guide

Tips and common mistakes

Seven tips

1. Leave town at 6:30. You’ll be at the ticket office when it opens and on the boardwalk 15 minutes later.
2. Take the buggy. It’s already in the ticket, and 1.6 km uphill after two hours on your feet is nobody’s idea of fun.
3. Bring cash. Foreign cards don’t always work at the cave. Withdraw around 1,000,000 VND (~$38) in town first.
4. Wear two pairs of shoes. Sneakers for the stairs, grippy sandals for the damp boardwalk, or the other way round.
5. Shoot long exposures. With a manual camera try ISO 800 at 1/15. There’s no room for a tripod, so brace on the rail.
6. Eat in town afterwards. The cafes at the parking lot charge double. In town a bowl of bún bò is 50,000 VND (~$2), at the cave it’s 100,000.
7. Download offline maps. Signal drops out between town and the cave.

Five mistakes

• Arriving at 11:00 on a Saturday. A 30-minute queue for the stairs, megaphones, strangers in every photo.
• Flip-flops. Blisters by step 200, slippery boards inside.
• Half a liter of water. There’s nothing to buy inside, and the stairs in the heat empty a bottle in 20 minutes.
• Setting up a tripod. Staff will ask you to take it down, and so will the people behind you.
• Counting on your card. If the terminal fails, the nearest ATM is 20 km back in town.

What else to see: Vietnam’s top attractions

FAQ

A day plan

If you got to Phong Nha town last night and Paradise is tomorrow morning, here’s the day:

1. 06:00: up, light breakfast at your hostel.
2. 06:30: ride or taxi out along the Ho Chi Minh Highway (western branch).
3. 07:00: parking and tickets (270,000 VND with the buggy, cash).
4. 07:10: buggy to the foot of the hill, then about 500 steps up.
5. 07:30: into the cave. Go slowly and stop at every formation.
6. 09:00: back out, down the stairs, buggy to the parking lot.
7. 09:30: head back to town. Stop at Dark Cave on the way (450,000 VND, ~$17) or go straight to lunch.
8. 10:30: lunch in town: bún bò or mì Quảng at a local quán for 50,000 VND (~$2).
9. 12:00: if you have time, the boat to Phong Nha Cave from the pier in town.
10. 17:00: back at the hostel, shower, dinner.

Paradise Cave is one of the reasons people fly into Dong Hoi at all. For about $10 and three hours you get a scale that’s hard to match anywhere in the region. If it hooks you, come back for the 7 km tour or look at the bigger expeditions: Hang En, Tu Lan and, one day, Son Doong.

Read next: Phong Nha-Ke Bang travel guide · Phong Nha hotels and farmstays · All the caves in the park · Son Doong expedition

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