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DETAIL INFORMATION

 An amazing journey to explore local culture awaits you

 Extremely budget-friendly prices $/person

Entrance Fee 150.000 NVĐ USD/Per person

Opening Hours 07:00:00

Duration:   Half Day

Rating 5⭐

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• One-of-a-kind experience: Board a traditional wooden boat along the peaceful Son River, then venture deep into the mountain to discover both a stunning underground river cave and a spectacular dry cave — all in a single trip.
• UNESCO World Heritage Site: Phong Nha Cave sits within the Phong Nha–Kẻ Bàng National Park, home to one of the world’s longest underground rivers and some of the most impressive stalactite formations on the planet.
• Important to know: The boat ticket (700,000 VND per boat) and cave entrance fee (150,000 VND per person) are charged separately. Avoid visiting during the rainy season (September–November) when the cave is typically closed due to flooding.

Ticket Prices at a Glance (2026)

Located approximately 45–50 minutes by road from Đồng Hới city, Phong Nha Cave is one of the most remarkable cave experiences in Southeast Asia. The journey begins on the Son River — whose name (“Son” meaning reddish-brown) comes from the iron-rich sediment that floods the river during the rainy season — and ends deep inside one of the world’s oldest limestone cave systems.

Located approximately 45–50 minutes by road from Đồng Hới city, Phong Nha Cave is one of the most remarkable cave experiences in Southeast Asia. The journey begins on the Son River — whose name (“Son” meaning reddish-brown) comes from the iron-rich sediment that floods the river during the rainy season — and ends deep inside one of the world’s oldest limestone cave systems.

What Does “Phong Nha” Mean?

The name breaks down into two Vietnamese words: Phong (wind) and Nha (teeth). The most widely accepted explanation is that the jagged stalactites and stalagmites crowding the cave entrance resemble the teeth of a jaw — shaped by wind and water over millions of years. An alternative local account suggests the name simply comes from a village that once stood near the cave entrance.

Essential Information

Best Time to Visit

The best window for visiting Phong Nha Cave is February through August, when the weather is dry, the Son River runs clear, and boat tours operate without interruption. April through August offers the brightest conditions and can be combined with swimming at Nuoc Mooc Spring or kayaking at Song Chay–Hang Toi. Avoid September to November entirely — flooding frequently forces the cave to close, sometimes for weeks at a time.

Opening Hours

The cave is open daily from 7:00 AM to 5:00 PM during the dry season. A critical note for planning: between September and November, heavy rainfall causes iron-rich sediment from the surrounding mountains to pour into the Son River — the very reason the river turns a reddish-brown color, earning its name. When water levels rise too high, the cave authorities close the site entirely for visitor safety. Always confirm the schedule before making travel arrangements.

A Brief History of Exploration

Phong Nha Cave’s documented history stretches back further than most visitors realize. The Cham people are believed to have been the first to know and use this cave, leaving inscriptions carved into the rock walls — still visible today in Hang Bi Ky (the Inscription Grotto). In 1550, the Vietnamese scholar Duong Van An became the first person to write about the cave in literature, describing it as a magnificent grotto with an underground river.

In the late 19th century, French missionary Léopold Michel Cadière explored the cave and documented Cham script on the walls, famously proclaiming Phong Nha “The First Cave of Indochina.” In July 1924, British explorer Barton surveyed the cave and compared its grandeur to the celebrated caves of Padirac in France and Drach in Spain. The modern scientific era began in 1990, when Hanoi University of Science teamed up with the British Cave Research Association, led by Howard Limbert, to conduct the first comprehensive survey — research that ultimately formed the foundation for Phong Nha–Kẻ Bàng’s UNESCO World Heritage nomination and designation in 2003.

Tips – What You’ll See: A Full Walkthrough

1. The Son River Cruise

The experience begins at the village pier, where you board a wooden motorboat carrying up to 10–12 passengers. Over the roughly 3 km river journey toward the cave entrance, the landscape unfolds in a way that feels almost cinematic: rows of maize fields stretching along the riverbanks, water buffalo grazing in the shallows, children playing by the water, and towering limestone karst formations rising on all sides. This river passage alone is worth the visit.

2. The Wet Cave — 1,500 Metres Inside the Mountain

As the boat enters the cave mouth — roughly 20–25 metres wide and 10 metres tall — the engine cuts off and the boatman switches to rowing by hand. You’re now gliding through roughly 1,500 metres of underground river in near-silence. Coloured lights illuminate the stalactites and stalagmites, which over millions of years have taken on forms resembling a lion, a unicorn, a royal throne, and a Buddha figure. The highlight is Hang Cung Dinh (the Court Grotto), where columns of stalactites rising over 20 metres create the impression of standing inside an underground palace.

3. The Dry Cave — A Spectacular Detour on the Way Out

On the return journey, the boat stops to let visitors disembark and explore the dry cave — a separate chamber with no underground river, but with a stalactite display that rivals the wet cave in sheer spectacle. Natural light filtering from above blends with artificial lighting to create a layered, cathedral-like atmosphere. Many visitors rate this as the most memorable part of the entire visit.

4. Tien Son Cave — A Worthwhile Add-On

Situated about 1,000 metres from Phong Nha Cave’s exit and at an elevation of 200 metres, Tien Son Cave (Fairy Mountain Cave) was discovered in 1935 by a local resident. Unlike Phong Nha, it has no underground river, but  its claim to fame is extraordinary: when the limestone formations are tapped, they produce sounds resembling musical instruments — an effect that has earned it the nickname “the musical cave.” Allow an extra 45–60 minutes if you plan to visit.

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