Phong Nha cave

Majestic Underground Wonder

Phong Nha Cave in Vietnam’s Phong Nha-Ke Bang National Park reveals a massive underground world carved by centuries of river erosion. The cave stretches over five kilometers and contains towering ceilings, deep pools and narrow passages that invite exploration. Visitors can paddle through calm waters while observing unique rock formations and rare wildlife adapted to life below ground. The area also features other impressive caves like Dark Cave and Phong Nha’s famous entrance, making it a destination for adventurous travelers seeking natural wonders beyond the surface.

Add to list

Cave in Vietnam

$$$

$	Cheap
$$	Medium
$$$	Expensive, upscale
$$$+	Very expensive, luxury

Safety: 7.8

General Safety:	8
Accessibility:	7

Read details

3/5

English is moderately spoken in tourist areas and by tour operators around Phong Nha, making communication generally smooth for travelers.

Highlights Description Getting there Hotels Tips Safety Articles

Last update: 12 Oct 2026

* We earn a commission from some links on this page.

Phong Nha cave Summary

World-class for cave exploration and adventure. Take boat trips through vast caverns, see dramatic stalactites and enjoy jungle trekking in the surrounding national park.

Public website:	www.primialau.vn

Vietnam – Quick facts

Guide Etiquette Holidays Other

Power Grid:	220 V, 50 Hz Plug: Type A , Type C Type A: Type C: Read about power adapters
Currency:	Vietnamese Dong (VND) £1 ≈ ₫34,381
Cashless info:	Rating 4/5 Cashless payments are widely accepted in Vietnam, especially in larger cities and tourist areas. Cash is still commonly used in rural areas. Save with a travel credit card
eSIM providers:	Best value: Saily Flexibility: Airalo Read our in-depth comparison

Tipping:	Tipping is not customary in Vietnam, but small tips are appreciated for good service in restaurants, taxis, and hotels.
Public drinking:	Public drinking is generally allowed in Vietnam, but drinking in certain public spaces, like parks, may be regulated.
Public smoking:	Smoking is allowed in outdoor public spaces, but there are smoking restrictions in some indoor public areas.

Independence Day (2 September)	Celebrates Vietnam’s independence from France
Tết (January/February)	The most important holiday in Vietnam, typically in January or February

Emergency contact:	Emergency Numbers: 113 (Police), 115 (Ambulance), 114 (Fire)
Taxi apps:	Grab
Other:	Vietnam is famous for its vibrant cities, historic sites, and stunning landscapes like Ha Long Bay and the Mekong Delta, offering a rich and diverse travel experience.

Best times to travel

The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.

Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.

Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.

Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.

Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.

for Phong Nha cave, Vietnam

🌧️

Jan

🌥️

Feb

🌥️

Mar

🌦️

Apr

🌦️

May

🔥

Jun

🌦️

Jul

🌦️

Aug

⛈️

Sep

⛈️

Oct

🌧️

Nov

🌧️

Dec

High season:	Feb. - July
Shoulder season:	Jan., Aug.

Tap on a month for more info Hover over a month for more info

Climate details

Rainy season September to December: floods and typhoons often close caves and boat tours

Son Doong Cave expeditions only run February to August, permits booked far in advance

Don't miss

🛶 Cruise the Son River to enter Phong Nha Cave
🪨 Explore stunning stalactites and underground lakes
🧗‍♂️ Try adventurous ziplining and mud bathing nearby

You've been here?

Located within Phong Nha-Ke Bang National Park, Phong Nha Cave is renowned for its 7,729 meters of explored passages and a spectacular 13,969-meter-long underground river flowing through it. The cave features unique formations such as stalactites, stalagmites and grottoes with evocative names like the Lion, Unicorn and Buddha, captivating visitors with their natural artistry.

The cave system is explored mostly by boat for the first 1500 meters accessible to tourists, giving a peaceful and almost surreal experience beneath the earth. The adjoining Tien Son Cave, illuminated with colorful lighting, invites visitors to walk through stunning chambers, offering an alternative view of this natural wonder.

While stunning, visitors should be prepared for humid conditions and somewhat uneven paths in the cave areas. The region's tropical climate can bring heavy rains, occasionally affecting accessibility. Guided tours are recommended to fully appreciate the cave's history and geology.

Phong Nha Cave is a must-visit for lovers of geology, nature and adventure, offering a unique glimpse into one of the world's most impressive cave systems.

Knowledge before you go

Book boat tour; only 1.5km accessible to tourists.
Wear non-slip shoes for sandy beach and walking path inside the cool, damp cave interior.
Visit February to August during dry season when boat rides operate reliably on Son River.
Spot famous formations like Lion, Fairy Cave and Buddha; bring camera for dramatic spotlight displays.

How to travel to Phong Nha cave

Phong Nha Cave is accessed primarily from the nearby town of Phong Nha or Dong Hoi city. Dong Hoi has a small airport with domestic flights and train connections to Hanoi and Ho Chi Minh City. From Dong Hoi, travelers can take guided tours, taxis or motorbike rides to the national park where the caves are located.

Access summary

From Dong Hoi Airport (VDH): Taxi or shuttle to Phong Nha, about 60–90 minutes.
From Hue: Tourist bus or private car via Dong Hoi, roughly 4–5 hours.
From Hanoi: Night bus or train to Dong Hoi, then transfer, 9–12 hours total.

Check your route from anywhere

Where to stay near Phong Nha cave

Accommodations are mainly found in Phong Nha town and Dong Hoi city, ranging from budget guesthouses to comfortable hotels. Staying in Phong Nha town provides quick access to the caves and a pleasant local atmosphere.

Hotel recommendations

*by rating and popularity. Commissions have no influence on the rankings.

Phong Nha Love Homestay

Phong Nha An An Homestay

9.3

Phong Nha Ecolodge Homestay and Tour - Mountain View

9.0

Discovery Lodge Phong Nha

9.3

Phong Nha Moonlight Villas

Explore more accommodations

Packing recommendations for Phong Nha cave

📷

Camera

👟

Comfortable walking shoes

🚰

Reusable water bottle

Universal travel adaptor

💳

Credit card with no foreign transaction fees

Budget snapshot

Costs compared to home

We calculate the average costs when travelling to destinations and compare those with the living costs at your home. With this you can get an estimate of how expensive or cheap the destination is for you.

To customise this, you can set up which location and price level are used for the calculations in your account settings.

-82 %

Daily expenses in the region are around 82% lower than the average across United States. That means you'll spend a lot less on meals and getting around.

Exchange rate trend

The exchange rate price factor shows how expensive or cheap a currency currently is compared to its historical average. It's a quick way to see if a country is currently more or less affordable due to exchange rate changes.

-12 %

Your exchange rate (GBP to VND) is 12% better than in recent years. That means travelling now is cheaper compared to the past.

Safety information overview

General safety

Phong Nha Cave is generally safe for travelers. The area has low crime rates and local guides ensure secure trekking routes. Visitors should stay hydrated, wear sturdy footwear, avoid night hikes and follow official tour guidelines to minimize risks.

Accessibility

Phong Nhã’s limestone caves are largely accessible, with paved walkways and elevators to the main chambers. However, some side passages remain steep and narrow, limiting wheelchair use. Visitors should bring sturdy shoes, a flashlight and check local guides for mobility-friendly routes.