Phong Nha Ke Bang National Park: The World’s Cave Kingdom

Where is Phong Nha Ke Bang National Park?

Phong Nha-Ke Bang National Park lies in north-central Vietnam, in Quang Tri province (the park was in Quang Binh province until Quang Binh merged into Quang Tri on July 1, 2025). It is known for its huge cave systems and rich biodiversity. The nearest city is Dong Hoi, about 45 km (28 miles) away by road, which has an airport and a train station.

First protected as a nature reserve in 1986 and upgraded to a national park in 2001, the area was listed by UNESCO in 2003 as a World Heritage site for its geological history. According to UNESCO, its karst began forming around 400 million years ago in the Paleozoic era, making it the oldest large-scale karst system in Asia. The listing was extended in 2015, and in 2025 it became a transboundary site shared with Hin Nam No National Park in Laos. The same limestone forests shelter a wide range of plants and wildlife.

How to Get there?

"How to get to Phong Nha-Ke Bang?" is a major concern in many travelers' plans. Here's a breakdown of the options from Vietnam's major cities.

From Dong Hoi to Phong Nha Town

After arriving in Dong Hoi by plane or train, you'll need to complete the final leg of your journey to Phong Nha, located about 45 km (28 miles) away. Here are the most common transportation options:

• Taxi or Private Car: The fastest and most convenient choice. This drive takes 45 to 60 minutes and typically costs between 400,000 and 500,000 VND (about $16-$20).
• Local Bus: The most budget-friendly option. The trip takes approximately 90 minutes, and the fare is around 35,000 VND (less than $2). Buses depart roughly every hour.

Things to Do in Phong Nha-Ke Bang National Park

• Phong Nha Cave

Phong Nha Cave, which gives the park its name, is about 7.7 km long and carries an underground river. Visitors can reach roughly the first 1.5 km of the system, mostly by boat.

The adventure begins with a serene journey on the Son River aboard a traditional dragon boat. As you glide along the emerald-hued water, you’ll pass scenic fishing villages and towering karst mountains cloaked in jungle. The boat then enters the cave, revealing a series of vast chambers where the darkness is broken only by your boat's light illuminating vast, otherworldly chambers. You will have the chance to disembark and walk through a large, dry cavern to admire the magnificent geological formations up close.

For an added adventure, climb the several hundred steps up the mountainside from the Phong Nha entrance to discover Tien Son Cave. This dry cave is known for its formations and the resonant, gong-like sounds its walls produce when gently tapped.

Fees & Fares:

• Phong Nha Cave Entrance: 150,000 VND per adult (~$6). Children under 1.3 meters are free.
• Tien Son Cave Entrance: 80,000 VND per adult (~$3).
• Boat Charter: 700,000 VND per boat (~$27). This is a required, fixed price for the round-trip journey, and each boat can hold up to 12 passengers.

Prices as listed by the national park in 2026. Fees change from time to time, so check the latest rates before you go.

💡If you are a trekking lover, check out more: Trekking in Vietnam: 6 best destinations, best time and practical tips

• Thien Duong Cave (Paradise Cave)

Thien Duong Cave, or Paradise Cave, is described by the national park as Asia's longest dry cave. It was discovered by a local man in 2005, surveyed by British cavers and opened to visitors in 2010.

Upon entering, visitors descend a wooden staircase into the main chamber. The cave runs for about 31 kilometers, with passages around 60 meters high and up to 150 meters wide in places, lined with large stalactites and stalagmites. A 1-kilometer wooden boardwalk allows for easy exploration of this subterranean wonder, where the formations are lit for easy viewing and photography.

For a more challenging experience, adventurous visitors can book a guided 7-km trekking tour that goes deep into the cave's undeveloped sections, involving both hiking and caving.

Admission Fees

• Adults: 270,000 VND (~$10)
• Children (1.1m to 1.3m tall): 145,000 VND (~$6)
• Children (under 1.1m tall): Free

• Nuoc Mooc ecological park

Phong Nha-Ke Bang National Park is located in a critical natural ecological area. It boasts a range of rainforests, striking blue rivers, and impressive limestone formations. These elements provide ample opportunities for visitors to explore the environment and breathe in the fresh air of this tranquil and beautiful setting. As you journey through the jungles and along the rivers, you may encounter a wide variety of wildlife, including vibrant bird species, colorful butterflies and dragonflies, and an array of plants, such as stunning orchids. If the temperature rises, it’s the perfect time for a refreshing swim.

💥Book tour: Tailor-made 3-week Vietnam organized tours, with a visit to Phong Nha💥

• Dark Cave

For those seeking a true adventure, the Dark Cave (Hang Tối) offers an action-packed experience from start to finish. True to its name, the cave's unlit passages are made of dark limestone, which you explore with only the beam of your headlamp.

The journey starts with a zipline of about 400 meters across the Chay River, soaring over its emerald waters. From there, you'll swim to the cave's entrance to begin your exploration, navigating narrow passageways that lead to a large, buoyant mud bath deep inside. After floating in the mineral-rich mud, the adventure continues back outside with kayaking on the river and time to enjoy a floating water obstacle course.

Tour Packages & Pricing

The Dark Cave is run as a package with several ticket levels. There are safety requirements: the mud bath is for visitors 1.1 m tall and over, and the zipline requires a minimum weight of 40 kg.

• Exploration package (adults): 450,000 VND (~$17), including the zipline, cave and mud bath, kayaking and water games.
• Children (1.1m to 1.3m tall): 150,000 VND (~$6).
• Cheaper packages: 220,000 VND and 150,000 VND for adults, with fewer activities.

Prices as listed by the national park. Discounted low-season rates have been applied in some years, so check before booking.

Multi-Day Cave Expeditions in the Phong Nha Area

Hang Son Doong

The undisputed centerpiece of Phong Nha-Ke Bang National Park is Hang Son Doong, which Guinness World Records lists as the largest cave in the world.

Guinness World Records gives its size as around 200 meters (655 ft) high, 150 meters (490 ft) wide and at least 6.5 kilometers (4 miles) long. This immense cavern is so vast it could house an entire New York City block, complete with 40-story skyscrapers. It also contains its own lush jungle ecosystem and a subterranean river, creating a unique world of its own.

Access is limited to small, licensed multi-day expeditions that run only from January to August each year, so places are scarce and usually booked well in advance.

Hang En

Often described as the world's third-largest cave, Hang En provides an adventure that is both spectacular and more accessible than its famous neighbor, Son Doong.

The 2-day, 1-night expedition leads you through pristine jungle and across numerous rivers. It’s a challenging journey that builds anticipation for the destination. The cave entrance is huge, and inside you reach a massive chamber where you will make camp on a sandy beach beside a serene, emerald-green lake.

While the trek covers roughly 25 km (over 15 miles) of hilly terrain and requires a moderate level of fitness, it is one of the most accessible ways to spend a night inside a giant cave.

The Tu Lan Cave System

The Tu Lan cave system is known for its "wet cave" tours, where you will spend a lot of time swimming through underground rivers.

You can choose from single-day trips to multi-day expeditions. Each tour is a mix of trekking through valleys and swimming inside the caves, with some swims covering up to 500 meters (1,640 feet) in the dark. On longer trips, you also get to camp outdoors near waterfalls.

Because this is a water-focused adventure, knowing how to swim is a requirement. You should be prepared and comfortable with being wet for most of the journey.

Phong Nha Beyond the Caves

Ride the Phong Nha Motorbike Loop & Explore by Bicycle

One of the best ways to experience the Vietnamese countryside is to explore the area around Phong Nha by bicycle or motorbike.

The local roads will take you through vast rice paddies and small farming villages, where you'll often see water buffalo grazing by the roadside. The entire landscape is defined by the impressive limestone karst mountains that rise out of the fields.

For some of the most dramatic scenery, consider riding the well-known loop along the Ho Chi Minh Highway West. This route offers incredible mountain views from several free lookout points, giving you a great opportunity to slow down and see the authentic, day-to-day life of rural Vietnam.

Discover the Bong Lai Valley

The Bong Lai Valley is a peaceful stretch of countryside near Phong Nha, known as the perfect spot to unwind for an afternoon.

A popular activity here is to rent a bicycle and explore the quiet roads that wind past farms and fields of corn and peanuts. The valley is famous for a few quirky local businesses that have become well-known stops. Highlights include The Pub with Cold Beer, renowned for its farm-to-table grilled chicken, and The Duck Stop, where you can feed a flock of ducks for a uniquely fun and chaotic experience.

>>> Read more: Duck Stop Phong Nha

Explore the Eco-Parks

For families or visitors looking for an organized outdoor activity, the Botanical Garden and Ozo Park are excellent choices.

• Botanical Garden: For a small fee (40,000 VND, or less than $2), you can take a relaxing walk on jungle trails to Gio Waterfall and Vang Anh Lake. It's a great, peaceful way to see the area's native plants and wildlife.

• Ozo Park: This park is for more active fun, offering treetop obstacle courses, ziplines, and kayaking. You can choose a ticket package that best fits your family's ages and interests.

Discover Wildlife and History

A unique experience in Phong Nha is joining a wildlife conservation tour. On these tours, you can help with conservation work by preparing food for animals, such as macaques and langurs, that have been rescued from illegal poaching. It's a hands-on way to learn about the challenges of wildlife protection and see the park's efforts up close.

For a look into the area's more recent history, you can visit the Eight Lady Cave (Hang Tam Co). It is a moving memorial to eight young volunteers who died tragically during the Vietnam War when a bomb blast sealed the cave they were using for shelter.

Kayaking on the Son River

Kayaking on the Son River is another popular activity in Phong Nha. It offers a different perspective, allowing you to see the impressive limestone karst mountains up close as you paddle along the water.

While the river is generally calm, this activity does require a moderate level of fitness.

How Long to Spend in Phong Nha?

To get a good feel for Phong Nha, plan for at least two full days. If a multi-day caving expedition is on your list, you'll want to set aside more time.

Here are a couple of suggestions to help you plan:

A Taste of Phong Nha (2 Days)

• Day 1: Cave Contrasts. Start your day admiring the immense scale of Paradise Cave, then switch to adventure with the afternoon activities at the Dark Cave.
• Day 2: River & Town Life. Enjoy a relaxing boat trip through Phong Nha Cave in the morning. In the afternoon, explore the cafes and shops in town.

The Full Experience (4 Days)

• Days 1-2: The Main Expedition. Dedicate your first two days to the memorable 2-day, 1-night trek to Hang En Cave.
• Day 3: Countryside Relaxation. After the trek, unwind with a leisurely bicycle ride through the peaceful farms and villages of the Bong Lai Valley.
• Day 4: Classic Farewell. Enjoy the iconic Phong Nha Cave boat tour as a final highlight before you depart.

What are the local gastronomic specialties?

In addition to Vietnamese dishes that can be found throughout the country (pho, fried rice, noodles, banh mi, fresh and fried spring rolls, etc.) and some Western dishes, two local specialties are worth trying in Phong Nha:

Cháo canh is a Quang Binh specialty and a common breakfast. Despite the name (cháo means porridge), it is closer to a noodle soup: thick rice-flour noodles cooked in broth, with snakehead fish, shrimp, crab or pork ribs depending on the stall. Unlike pho, it is served with chopped mustard greens rather than a plate of herbs.

Many restaurants offer numerous barbecue dishes. It can be served in one or more banana leaves. On the menu: rice, vegetables and barbecued meats (chicken, pork, duck, spicy sausages, etc.)

>>> You are also interested in Vietnamese cuisine? Let's Discover the Top Vietnamese Dishes to Try in Each Region!

Where to stay in Phong Nha Ke Bang?

• Eco-Resorts & Farmstays: These are typically located outside the main town in quieter, rural settings. Here you can find traditional-style wooden bungalows at places like Chày Lập Farmstay and Nguyen Shack.

• Hotels & Lakeside Resorts: For more comfort and amenities like a swimming pool, places such as Phong Nha Lake House offer modern hotel rooms, many with views of Dong Suon Lake.

• Budget Hostels & Guesthouses: In the center of Phong Nha town, you'll find plenty of affordable guesthouses and hostels, which are popular choices for backpackers and budget travelers.

What is the weather like in Phong Nha-Ke Bang?

Phong Nha - Ke Bang has a tropical monsoon climate typical of north-central Vietnam. The coolest months, December to February, average around 18°C, while summer is hot and humid. Most of the year's rain falls in the second half of the year, and the heaviest rains, floods and storms usually come in autumn.

We recommend that you avoid traveling to Phong Nha - Ke Bang during the rainy season and typhoon period, between October and December as heavy rains may disrupt your stay. Instead, plan your visit between February and August. This is also the only period when the Son Doong expedition runs.

With show caves, multi-day expeditions, countryside rides and river trips, Phong Nha Ke Bang suits nature lovers, active travelers and anyone curious about geology, and it fits well between Hanoi and Hue on a north to south route through Vietnam.

Phong Nha Ke Bang FAQs (Click to see)

What is Phong Nha famous for?

Phong Nha is famous for its caves. Hang Son Doong is listed by Guinness World Records as the largest cave in the world, Paradise Cave is about 31 km long, and Phong Nha Cave, the park's best-known show cave, can be visited by boat for about the first 1.5 km.

How much does it cost to go to Son Doong cave?

Oxalis Adventure, the only company licensed to run Son Doong expeditions, lists the expedition at USD 3,000 (VND 80,000,000) per person. As of September 2026, Oxalis states that the 2027 and 2028 expeditions are fully booked.

How long to spend in Phong Nha Ke Bang?

We recommend staying at least two days, longer if hiking, trekking, or joining a caving expedition. With two days you can see Paradise Cave, the Dark Cave and the boat trip into Phong Nha Cave.

Are there grabs in Phong Nha?

Do not rely on ride-hailing apps such as Grab in Phong Nha; arrange a taxi, private car or hotel transfer in advance. Phong Nha has no airport or railway station, so the nearest air and rail connections are in Dong Hoi, about 45 km away. You can also take a bus or private car from Hue, Da Nang or Hoi An.

Why Son Doong cave tour priced at $3,000 a person?

The main factors behind the USD 3,000 price are:

• Limited Access: Expeditions run only from January to August, in small groups of up to 10 guests, to protect the cave.
• Full Service: It will cover all entrance fees, accommodation, food, and guides, so clients will enjoy a full-service tour.
• Safety and Support: Every tour will be provided with a well-trained team of porters and safety personnel in addition to the best quality safety equipment.

These contributing factors set the tour at a premium price.

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