- Where
- Quây Sơn River, Trùng Khánh
Cao Bằng province, Vietnam - Coordinates
- 22.8550° N
106.7220° E - Height
- 30 m (Wikipedia)
53 m (VietnamPlus) - Shared with
- China, where it is Detian Falls
- Status
- Non Nuoc Cao Bang UNESCO Global Geopark
since 2018 - Getting there
- By road from Hanoi
about seven to eight hours - Best visited
- June to October
The road wound for a long day between limestone hills shaped like upturned bowls, past rice fields green right up to the foot of each hill. Then a roar, and a wide white curtain of water came down in steps into a jade pool, splitting round little wooded rocks. Bamboo rafts nosed toward the spray. I lingered in the mist until my notebook went soft at the edges.
The short answer
Ban Gioc is a waterfall on the Quây Sơn River where it forms the border between Vietnam and China, between Trùng Khánh in Vietnam’s Cao Bằng province and Daxin County in China’s Guangxi region. Wikipedia places it 272 kilometres north of Hanoi. Most of the time it looks like two falls, which Vietnamese naming treats as two parts of one, the main fall and the subordinate fall; when summer rains swell the river they can join again into a single fall. On the Chinese side it is called Detian. The falls lie within the Non Nuoc Cao Bang Geopark, which UNESCO’s Executive Board admitted to its Global Geoparks Network on 12 April 2018, as Vietnam Television reported.
Why it's worth knowing
How big depends on who is measuring. Wikipedia gives the drop as 30 metres; VietnamPlus, the English service of Vietnam’s state news agency, gives 53 metres high and 300 metres wide, falling in three levels. Both call it the fourth-largest waterfall on a national border, after Iguazú, Victoria and Niagara, and neither says how “largest” was measured. What both agree on is the shape: the river spreads across a broad limestone front, and rocks and small wooded islands break it into several curtains of white water. Wikipedia records that over thousands of years the falls have eaten their crest back upstream.
A shared view. Wikipedia records a road along the top of the falls leading to a stone marker inscribed in French and Chinese, a relic of the nineteenth-century boundary between French Indochina and Qing China, and disputes over the line that the 1999 Vietnam–China Treaty on the Land Borderline settled, with further talks in 2009. The two governments signed an agreement on protecting and using the falls for tourism on 5 November 2015, and on 15 September 2023 opened a shared scenic area on a pilot basis, according to the Vietnam National Authority of Tourism, for pre-registered groups crossing with passports or border passes for up to five hours.
The field notes
A staircase of limestone
The falls sit in mature karst, Wikipedia explains: limestone bedrock worn into towers and hills, with streams springing from fissures low in the slopes. The river drops from layer to layer of the bedrock, and the steps record sediments of different hardness laid down over millions of years. Vietnam Television describes the geopark around the falls as covering more than 3,270 square kilometres of Cao Bằng, with rocks that record more than five hundred million years of the Earth’s history.
When the river is up
Vietnam.travel, the Vietnam National Authority of Tourism’s site, calls the falls at their best from June to October, and fullest in September and October. It also notes that at the end of the dry season the river’s flow is held back upstream and released daily between 10:30 and 13:00, bringing the falls up to full flow for those hours.
The falls seen across rice paddies in July.
Photograph: Ekrem Canli · Ban Gioc Waterfalls I · CC BY-SA 3.0
The main fall up close, churning green water.
Photograph: Rod Waddington · Ban Gioc Falls (50000695812) · CC BY-SA 2.0
The upper cascades in the dry season, April.
Photograph: Phương Huy · Public domain · cropped
- Go when the river is high, if you can choose, and stand where the spray reaches you. A dry visit is a quieter one.
- Put the life jacket on before the raft leaves, and sit still when the boatman says so. He knows this water and you have only just met it.
- Somebody farms every flat piece of ground in this valley. Walk on the field banks, never across the crops, and leave the rice to its owners.
- Find the old stone marker on the road above, read both kinds of lettering, then return to the spray.
- Settle for the list how many falls there are. I changed my answer each time the wind moved the spray, and in the end wrote ‘some’.
The main fall. Thác chính, the larger of the two parts into which Vietnamese naming divides Ban Gioc, where the Quây Sơn River pours over its broadest limestone ledges into the pool below. Wikipedia records that rocks and trees break it into separate falls, and that over thousands of years the falls have worn their crest back upstream; the stone is still giving way, a little at a time.
Tally, in the marginIt looked like one wall of water, all of a piece, until the raft showed me the little green islands standing in it, every tree on them gripping tight. Nothing I have met grips so cheerfully.
Getting there
How to get there. By road from Hanoi. Vietnam.travel gives the distance as roughly 335 to 340 kilometres on paved national highways and the journey as seven to eight hours depending on transport, with day and overnight buses from Hanoi’s My Dinh bus station to Cao Bằng, from where local transport and tours run on to the falls. This entry describes the visit from the Vietnamese bank; crossing into the shared scenic area on the Chinese side is a separate, pre-registered arrangement with its own rules.
When to go. June to October for the fullest water, by Vietnam.travel’s account; at the end of the dry season, time a visit for the daily release between 10:30 and 13:00.
What to arrange ahead. A bed in Cao Bằng or nearer the falls, since the journey from Hanoi takes most of a day each way, and transport for the last stretch. A passport if you mean to ask about the shared scenic area.
Safety. The State Department rates Vietnam Level 1, exercise normal precautions (advisory dated 24 June 2026, read on 4 October 2026). It notes that landmines and unexploded ordnance remain in Vietnam, that the risk is low in populated areas including tourist destinations, and that unknown metal objects in the ground should be left alone. The hazards here are the place’s own: wet rock, spray and fast water below the falls.
Mark this place
Common questions
Where is Ban Gioc Waterfall?
Ban Gioc Waterfall is on the Quây Sơn River in Trùng Khánh, Cao Bằng province, in the far north of Vietnam, about 272 kilometres north of Hanoi by Wikipedia’s figure. The river is the border with China, whose side of the falls is called Detian.
How tall is Ban Gioc Waterfall?
Sources differ. Wikipedia gives Ban Gioc Waterfall a drop of 30 metres; VietnamPlus, the English service of Vietnam’s state news agency, gives 53 metres high and 300 metres wide, in three levels.
Is Ban Gioc Waterfall in Vietnam or China?
Both. Ban Gioc Waterfall straddles the Vietnam–China border on the Quây Sơn River; the Chinese side is called Detian Falls. Wikipedia records that the 1999 Vietnam–China Treaty on the Land Borderline settled the demarcation there, and a stone marker inscribed in French and Chinese stands on a road above the falls.
Can you visit the Chinese side of Ban Gioc Waterfall?
Under conditions. The Vietnam National Authority of Tourism says a shared Ban Gioc–Detian scenic area opened on a pilot basis on 15 September 2023, for pre-registered groups of up to twenty crossing with passports or border passes, staying no more than five hours and not overnight.
How do you get to Ban Gioc Waterfall from Hanoi?
By road: Vietnam.travel gives roughly 335 to 340 kilometres on paved national highways, seven to eight hours depending on transport, with buses from Hanoi’s My Dinh station to Cao Bằng and local transport or tours on to Ban Gioc Waterfall.
When is the best time to see Ban Gioc Waterfall?
Vietnam.travel calls Ban Gioc Waterfall at its best from June to October, fullest in September and October. At the end of the dry season, it notes, water held back upstream is released daily between 10:30 and 13:00, bringing the falls to full flow.
Is Ban Gioc the fourth-largest border waterfall in the world?
That is how VietnamPlus, the English service of Vietnam’s state news agency, and Wikipedia both describe Ban Gioc Waterfall: fourth-largest on a national border, after Iguazú, Victoria and Niagara. Neither source says how “largest” is measured, so the ranking is theirs.
Is Ban Gioc Waterfall part of a UNESCO site?
Yes: a UNESCO Global Geopark, not a World Heritage Site. Ban Gioc Waterfall lies within the Non Nuoc Cao Bang Geopark, admitted to UNESCO’s Global Geoparks Network on 12 April 2018, which Vietnam Television describes as covering more than 3,270 square kilometres.