Phong Nha

Home to Son Doong – the world's largest cave and stunning karst jungle

Overview

Phong Nha-Ke Bang National Park in Quang Binh province is the caving capital of the world. The park sits on one of the oldest karst mountain ranges in Asia — over 300 million years old — and hides the most extraordinary cave systems ever discovered, including Son Doong, the world's largest cave by volume, and Hang En, the world's third largest. The town of Phong Nha itself is a sleepy riverside village on the Son River, about 50 km north of Dong Hoi. It has transformed in the past decade from an obscure backwater into Vietnam's top adventure destination, yet still feels raw and unhurried compared to Hoi An or Ha Long. Most visitors spend 2–4 days here: enough for a day trip to Paradise Cave, a boat ride through Phong Nha Cave, and a cycle through the Bong Lai Valley. For the serious caving expeditions — Tu Lan, Hang En, Son Doong — you need to plan weeks or months ahead. The dry season runs February to August; caves like Phong Nha Cave close during heavy rain when the river floods.

Administrative note: From July 2025, Phong Nha-Ke Bang is part of the new Quảng Trị province, formed by merging the former Quảng Bình and Quảng Trị provinces. The national park, caves, and all access via Đồng Hới are unchanged.

Home to the world's largest cave — Son Doong — and dozens more in a UNESCO National Park of dense jungle, underground rivers, and unique cave ecosystems found nowhere else on Earth.

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Attractions

Things to see and do in Phong Nha

Son Doong Cave is the headline act — a passage large enough to contain a 40-storey skyscraper, with its own weather system, jungle, and river inside. The only tour operator is Oxalis; the 4-day expedition costs around ,000 and books out over a year in advance. More accessible but still spectacular: Paradise Cave (Thien Duong) stretches 31 km and features a cathedral-like main chamber with towering stalactites — the 1-km wooden walkway inside is open year-round and takes about 2 hours. Phong Nha Cave is reached by boat along the Son River, gliding past cliff faces and through the illuminated entrance chamber; best in the dry season. Dark Cave (Hang Toi) is the adventure option — zip-line over the river, swim into the cave, and roll in mud pools inside. Tu Lan Cave System, used as a filming location for Kong: Skull Island, involves wading, swimming, and crawling through connected cave tunnels; one-day to four-day trips available via Oxalis. Hang En is a full-day jungle trek with an overnight inside the cave — one of the most memorable experiences in Vietnam.

Phong Nha-Ke Bang National Park & Son Doong Cave

Son Doong Cave

The world's largest cave by volume, with its own jungle, clouds and river inside.…

Phong Nha Cave

A river cave explored by boat through cathedral-like chambers — the original jewel of…

Paradise Cave

An 8 km dry cave with towering stalactite formations; only 1 km is open…

Hang En Cave

The world's third largest cave, reached via a 2-day jungle trek with camping at…

Interests

What Phong Nha is known for

Getting There

Transport options to reach Phong Nha

Phong Nha is 50 km north of Dong Hoi, the nearest transport hub. Dong Hoi has an airport with daily flights from Hanoi (~1 hour) and Ho Chi Minh City (~1.5 hours). From Dong Hoi Airport or train station to Phong Nha, a taxi costs around 400,000 VND (45 min); the local bus runs hourly 5 AM–5 PM for 35,000 VND and takes 45–90 minutes. By train, Dong Hoi is on the main Hanoi–HCMC Reunification Express line — a classic overnight sleeper option. By bus, direct coaches run from Hue (~150,000 VND, 2.5 hours) and Da Nang (~200,000 VND, 3.5 hours) with several daily departures. Hanoi to Dong Hoi by sleeper bus takes around 8–9 hours. From Dong Hoi, guesthouses in Phong Nha will often arrange free or cheap pick-ups if you book a night with them — worth asking in advance. Private car transfers from Hue or Da Nang can also be arranged through our recommended drivers.

Nearest airport: Da Nang International Airport (DAD)

Da Nang is the main gateway to central Vietnam with direct international and domestic flights.

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By air

Fly into Da Nang International Airport (DAD), then take a bus, train, or private transfer onward to Phong Nha.

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By train or bus

Search schedules and book seats on 12Go or Vexere — both cover routes from Da Nang to Phong Nha.

🚂 Train & bus timetables — 12Go 🚌 Book limousine & sleeper buses — Vexere

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Private airport transfer

Book a private transfer directly — faster and stress-free, especially with luggage or arriving late.

Central Vietnam transfer — Alex Le

For a full breakdown of transport options across Vietnam → Vietnam Transportation Guide

Itineraries

Suggested routes that include Phong Nha

2 days

Phong Nha Itinerary Ideas

Hotels & Where to Stay

Accommodation options in Phong Nha

Phong Nha village has a compact strip of guesthouses, hostels, and small hotels along the main road and riverfront. Budget: Easy Tiger Hostel and Phong Nha Farmstay dorms from –12/night; both have pools and organise tours. Mid-range: Phong Nha Lake House Resort and Chay Lap Farmstay offer bungalows in peaceful riverside settings from –80/night. Upmarket: Phong Nha Farmstay (the original, not to be confused with imitators) has cottages and a pool from –120/night and is the best-connected for booking reputable cave tours. Most properties can arrange Dark Cave, Paradise Cave, and boat tours directly. Book well ahead for the June–August peak season and for Son Doong / Hang En expeditions which require months of lead time.

Search hotels in Phong Nha on Klook →

Restaurants & Food

Where to eat in Phong Nha

Restaurant and food guides for Phong Nha are coming soon.

Experiences

Adventures and activities in Phong Nha

Beyond the caves, Phong Nha rewards slow exploration. Rent a bicycle or motorbike and ride the Bong Lai Valley loop — 15 km through rice paddies, farmland, and limestone hills, passing friendly locals and small family restaurants. The Pub with Cold Beer is a legendary pit stop: a farm-to-table restaurant reached by boat across the river, run by a local family, serving fresh food and cold drinks in a jungle setting. Momma D's Rooftop has the best sundowner views over the national park. For an evening wind-down, the town's stretch of riverside restaurants does simple Vietnamese food and cold beer. Kayaking tours run along the Son River past the cave entrance cliffs. Night wildlife tours into the national park offer a chance to spot civets, slow lorises, and deer. The Bong Lai Valley cycling loop and a morning boat trip to Phong Nha Cave make for a perfect two-day itinerary at low cost.

Travel Tips

Practical guides for visiting Phong Nha

Travel tip articles for Phong Nha are coming soon.