Van Long protects a rare lowland inland wetland–limestone karst mosaic in Ninh Binh. Established as a nature reserve in 2001 and designated Ramsar Site No. 2360, it combines shallow freshwater wetlands, submerged vegetation, caves, waterbirds, aquatic biodiversity and globally important habitat for the Critically Endangered Delacour's langur.
Overview
Understand the reserve as one connected ecological system.
Van Long Wetland Nature Reserve is one of northern Vietnam's most distinctive wetland–karst conservation landscapes. Current Ninh Binh reporting describes a natural landscape of more than 3,500 hectares, with 2,743 hectares under reserve management and more than 400 hectares of permanently inundated wetland. The Ramsar Site itself covers 2,736 hectares. The wetland was shaped in part by water-control works associated with a long Day River dyke, but today functions as one of the rare intact lowland inland wetland systems remaining in the Red River Delta. Shallow water, submerged vegetation and flat marshes meet abrupt limestone towers, caves and cliffs. This combination supports fish, aquatic invertebrates, waterbirds and a globally important population of the Critically Endangered Delacour's langur. Van Long was established by Ninh Binh in December 2001 and became Vietnam's ninth Ramsar Site, No. 2360. In 2026, Ninh Binh is studying a possible future World Heritage nomination involving Tam Chuc and Van Long; this is nomination preparation only and must never be presented as current World Heritage status.
Key things to understand
Read Van Long as a wetland–karst ecosystem, not simply a scenic lagoon.
Use small-boat travel as quiet wildlife observation rather than entertainment.
Treat Delacour's langur sightings as exceptional and never guaranteed.
Keep distance from limestone cliffs used by primates and nesting wildlife.
Notice submerged vegetation beneath the shallow water where visibility allows.
Look for waterbirds without approaching roosts or breeding sites.
Understand that the Ramsar boundary, reserve-managed area and wider natural landscape use different area figures.
Do not confuse Ramsar designation with UNESCO World Heritage status.
Treat the 2026 Tam Chuc–Van Long World Heritage work as nomination preparation only.
Avoid loud voices because sound carries strongly across flat water and cliff faces.
Do not pick aquatic plants or disturb mud, reeds and submerged vegetation.
Use community boat services responsibly because local livelihoods are part of long-term wetland conservation.
Reserve perspective
How to understand this protected landscape
Why it matters
Van Long protects a rare Red River Delta inland wetland while also safeguarding the world's most important surviving stronghold of the Delacour's langur.
What makes it distinctive
Few places in Vietnam combine flat shallow freshwater, submerged vegetation and abrupt limestone primate habitat in such a compact landscape.
What visitors often miss
The reserve's fish, algae, aquatic invertebrates, hydrology and community water functions are as important to its Ramsar identity as its famous langurs.
A quiet Ninh Binh wetland where shallow water meets limestone cliffs—and where one of the world's rarest primates still survives.
Protected landscape
Why this nature reserve exists
Identity
Protected Area Role
Protects a lowland inland wetland, limestone-karst habitat and associated biodiversity in Ninh Binh.
Ramsar Role
Represents an internationally important wetland under the Ramsar Convention.
Primate Role
Provides the principal surviving stronghold for the Critically Endangered Delacour's langur.
Waterbird Role
Functions as refuge, breeding habitat and staging habitat for wetland birds.
Community Role
Provides water regulation, aquatic resources, scenic value and ecotourism income to surrounding communities.
Core Insight
Van Long's conservation value comes from the interaction of water, limestone, wildlife and people—not from the lagoon scenery alone.
Designation
Reserve Established
December 2001 by Ninh Binh provincial authority.
Ramsar Site Number
2360
Ramsar National Order
Vietnam's ninth Ramsar Site.
Ramsar Recognition Context
International recognition reflects ecological character and wetland importance, especially intact lowland inland wetland habitat and Delacour's langur conservation.
World Heritage2026
Ninh Binh is preparing and studying a possible nomination involving Tam Chuc and Van Long.
World Heritage Rule
Van Long is not currently a UNESCO World Heritage property and must not be enabled on the Heritage Map.
Geography
Setting
Northeastern part of the historic Gia Vien landscape in present-day Ninh Binh.
Current Localities
Current 2026 Ninh Binh tourism reporting identifies Gia Van, Gia Vien, Gia Hung and Gia Tran.
Historic Localities
Older reserve documentation lists seven former communes under the pre-reorganization district structure.
Terrain
Flat wetland with limestone blocks rising abruptly above the plain.
Wetland Surface
Shallow freshwater lake, marsh and swamp areas with abundant submerged vegetation.
The visual contrast between horizontal water and vertical limestone is also the ecological structure of the reserve.
Landscape & water
Rock, caves and water shape the reserve together
Hydrology
Formation Context
Current Ninh Binh tourism reporting links the wetland's formation to construction of a more-than-30-km flood-control dyke on the left bank of the Day River in 1960.
Water Functions
Water storage
Drainage
Support for surrounding agriculture
Aquatic habitat
Wetland vegetation
Landscape and ecotourism
Subterranean Role
Ramsar information identifies subterranean hydrological systems associated with the limestone wetland complex.
Seasonality
Water depth, exposed vegetation and wildlife use can vary seasonally.
Visitor Rule
Do not assume identical water levels or boat routes throughout the year.
Caves
Quantity Context
Tourism sources variously describe more than 30 caves and, in broader landscape descriptions, much larger numbers of karst cavities; counts depend on what is classified and surveyed.
Visitor Known
Ca Cave
Bong Cave
Rua Cave
Chanh Cave
Access Rule
Only enter caves currently open and authorized for visitors.
Ecological Rule
Caves can be wildlife refuges; access should never override conservation.
Ecosystems
Connected habitats create the reserve's ecological value
01
Shallow freshwater wetland
Lake, marsh and swamp habitat with submerged vegetation.
Why it matters
Core Ramsar ecological character and habitat for fish, waterbirds and aquatic organisms.
Visitor impact
Boat disturbance, litter and vegetation damage can reduce habitat quality.
02
Limestone karst cliffs
Steep rocky towers rising directly from the wetland plain.
Why it matters
Critical terrestrial habitat, especially for Delacour's langur.
Visitor impact
Close approach, noise and climbing can disturb wildlife.
03
Cave ecosystem
Numerous karst cavities with aquatic and terrestrial connections.
Why it matters
Adds habitat complexity and geological value.
Visitor impact
Uncontrolled entry, lighting, touching and noise can damage cave systems.
04
Reed and emergent vegetation
Wetland-edge vegetation at changing water depths.
Why it matters
Shelter and feeding habitat for birds, fish and invertebrates.
Visitor impact
Cutting or boat intrusion can fragment cover.
05
Community wetland edge
Agricultural and inhabited landscape around the reserve.
Why it matters
Links conservation with water management and local livelihoods.
Visitor impact
Waste, pollution and unmanaged tourism can enter the wetland from outside the protected core.
Biodiversity
Forest, plants and wildlife reveal the conservation stakes
Biodiversity
Vascular Plants
457 species, 327 genera and 127 families in the national biodiversity profile.
Rare Plants
The national profile reports eight species in the 1996 Vietnam Red Book.
Mammals
39 species, 19 families and seven orders in the national biodiversity profile.
Rare Mammals
The same source identifies 12 rare mammal species.
Fish
54 species recorded for the Ramsar Site in cited survey information.
Algae
282 algae and cyanobacteria species/subspecies.
Aquatic Invertebrates
More than 60 aquatic crustacean and mollusc species.
People & interpretation
Experience the reserve without separating nature from community
Community
Buffer Zone
Older conservation material describes densely inhabited communities around the reserve.
Livelihood Connections
Agriculture
Aquatic resources
Boat services
Ecotourism
Local food and visitor services
Wise Use
Ramsar's wise-use principle is especially relevant where wetland services support surrounding communities.
Visitor Rule
Use legitimate community services and avoid behavior that pushes boat operators toward wildlife disturbance.
Conservation
Visitor access remains subordinate to protection
Conservation
Priorities
Wetland ecological character
Delacour's langur habitat
Limestone vegetation
Waterbirds
Aquatic biodiversity
Water quality
Hydrological function
Community livelihoods
Low-impact tourism
Pressures
Wildlife disturbance
Water pollution
Habitat fragmentation
Tourism crowding
Noise
Boat pressure
Agricultural runoff
Climate variability
Invasive species
Management Principle
Wetland conservation must integrate water management, limestone habitat and surrounding community use.
Visitor Message
Quiet behavior is an ecological practice, not merely an aesthetic preference.
Plan your visit
Choose access, timing and activities around current conditions
01
Van Long wetland introduction
2–3 hours
Reserve orientation
Quiet boat trip
Karst and submerged-vegetation interpretation
Waterbird observation
Return without wildlife pursuit
Best for: First-time visitors
02
Conservation-focused morning or afternoon
Half day
Wetland ecology
Boat observation
Delacour's-langur conservation interpretation
Community/ecotourism context
Slow photography
Best for: Nature travelers and photographers
03
Ninh Binh biodiversity contrast
Full day or split across days
Van Long wetland
Karst-primate interpretation
Cuc Phuong National Park on a separate suitable schedule
Best for: Travelers comparing wetland and forest conservation systems
Location
AreaVan Long wetland-karst landscape, Ninh Binh, Vietnam
Boat across Van LongTake a low-impact boat trip through the reserve and watch for birds and, with luck, distant Delacour's langurs.
Questions
Frequently asked questions
What is Van Long Wetland Nature Reserve?
It is a protected freshwater wetland–limestone karst landscape in Ninh Binh and an internationally important Ramsar Site.
When was the reserve established?
Current Ninh Binh and national conservation sources state that it was established in December 2001.
Is Van Long a Ramsar Site?
Yes. It is Ramsar Site No. 2360 and is recognized as Vietnam's ninth Ramsar Site.
How large is Van Long?
Different official figures describe different extents: the Ramsar Site is 2,736 ha, current reserve-managed area is 2,743 ha, and the wider natural landscape is described as more than 3,500 ha.
How much is permanently wet?
Current national and provincial conservation reporting describes more than 400 ha of permanently inundated wetland.
Why is Van Long internationally important?
It protects a rare lowland inland wetland, important aquatic and waterbird habitat and the largest key population of the Critically Endangered Delacour's langur.
Can I see Delacour's langurs?
Possibly, but never assume or demand a sighting. Animals move naturally and should be observed only at respectful distance.
How many Delacour's langurs live here?
Older conservation assessments cited around 150–180 individuals, while later sources describe population growth. A current local population should only be published from a recent dedicated census.
Is Van Long a UNESCO World Heritage Site?
No. In 2026 Ninh Binh is preparing and studying a possible Tam Chuc–Van Long nomination, but Van Long is not currently inscribed on the World Heritage List.
What does Ramsar mean?
It is an international wetland-conservation framework promoting protection and wise use of wetlands.
What is the main visitor experience?
Quiet small-boat travel through shallow wetland beneath limestone cliffs, combined with landscape and wildlife observation.
How long is the boat trip?
Duration varies with current route and operations, so it should be verified locally rather than hard-coded.
What wildlife can be seen?
Waterbirds and wetland organisms may be visible, and Delacour's langurs are sometimes observed on limestone cliffs. No species should be guaranteed.
How many plant species are recorded?
The national biodiversity profile records 457 vascular plant species.
How many fish species are recorded?
Ramsar conservation information cited by the national biodiversity authority records 54 fish species.
Can I visit caves?
Only caves currently authorized and open for visitors should be entered.
Can I fly a drone?
Do not assume permission; protected-area, aviation and wildlife-disturbance restrictions apply.
Can I feed the langurs or birds?
No. Feeding wildlife changes behavior and can harm animals and conservation work.
When is the best time for photography?
Calm early or late light can produce reflections, but weather and wildlife behavior vary and no condition is guaranteed.
Is Van Long suitable for children?
It can be, provided boat safety, heat and the child's ability to sit quietly are considered.
Is it wheelchair accessible?
Accessibility depends heavily on current boat-boarding infrastructure and assistance; verify before travel.
What is the most important visitor behavior?
Stay quiet, follow authorized boat routes and never pressure operators to approach wildlife more closely.
Sources
Primary references
Ramsar Sites Information ServiceRIS for Site no. 2360, Van Long Wetland Nature Reserve, Viet Nam