Bou Sra Waterfall (also spelled Bousra or Busra) is a stunning triple-tier cascade set amid the upland forests of Mondulkiri province. About 43 km northeast of Sen Monorom, it is often cited as one of Cambodia’s most spectacular waterfalls. Two main drops (roughly 10 m and 25 m) plunge into a gorge surrounded by lush jungle, misty rocks and giant trees. In the dry season the flow narrows to twin streams, while the rainy season (May–October) makes it thunderously full. Locals consider Bou Sra culturally special: the indigenous Bunong highlanders regard the falls as a sacred spot used in traditional rituals. You’ll even find a small Bunong village – Pichinda – with a guesthouse nearby. Thanks to new viewing platforms, visitors now get panoramic photo ops from above as well as at pool level.
Getting There
From Phnom Penh:
The provincial capital, Sen Monorom, is your gateway to Bou Sra Waterfall. By road, it’s roughly 390 km (about 5.9 to 6.5 hours’ drive) from Phnom Penh to Sen Monorom. Minivans and buses run daily and take approximately 6 to 7 hours. Driving yourself or hiring a private taxi can be slightly faster and more comfortable.
From Sen Monorom:
Bou Sra lies about 43 km northeast of the town. The road begins paved but eventually turns into a red-dirt forest track. A motorbike or 4×4 vehicle is ideal, especially during the rainy season. Expect the journey to take 1 to 2 hours, depending on road conditions. Local tuk-tuks or moto-taxis can also be hired in town to reach the falls.
Other Hubs:
There are no regular flights to Mondulkiri; international visitors usually arrive via Phnom Penh (or occasionally from Siem Reap). For those traveling from the Vietnam border (near Preah Vihear), Bou Sra Waterfall is located about 15 km west of the frontier.
Access & Hours
Bou Sra Waterfall is open daily during daylight hours. The park generally opens around 7:00 AM and closes by 5:00 PM. Arriving early is recommended to avoid crowds and the afternoon heat.
There is a small entry booth near the top trail that charges a nominal fee—roughly $2.50 to $3 USD per foreign visitor. Cambodian riel is also accepted, and local residents typically pay a reduced rate. Be sure to carry small denominations of USD or riel for convenience.
Facilities at the waterfall are limited. You’ll find a few shaded picnic tables and a snack stall, but there is no full-service restaurant or shop on-site, so it’s best to bring your own essentials.
Things to Do at Bou Sra Waterfall
Photography & Sightseeing: The waterfall’s mossy pools and tiered cascades make for spectacular photos. Platforms and trails allow visitors to capture views from above and beside each drop. You can hike along the well-trodden paths, though some spots may be slippery after rain.
Hiking: Jungle tracks lead through the forest surrounding the falls. Adventurous hikers can explore up to approximately 25 km of trails in the area. Short walks lead to secondary cascades or quiet viewpoints. Keep an eye out for wildlife such as kingfishers, hornbills, and butterflies in the forest canopy.
Swimming & Picnicking: The pool at the base of Bou Sra is a popular spot for a refreshing dip. Many Cambodian families picnic here, creating a lively and sociable atmosphere. The water is emerald green in some areas, but be cautious—currents can be strong and rocks may be slippery. Pack a picnic and enjoy the peaceful setting near the serene pools and sandy patches.
Zipline: For those seeking adventure, the nearby Mayura Zipline course features several lines through the trees, including a thrilling 100-meter stretch that flies directly over the upper section of the waterfall. This experience offers a bird’s-eye adrenaline rush above the gorge.
Village Visits: Close to the waterfall, Pichinda village and other Bunong communities provide a chance to explore local indigenous culture. With a guide or local tour, visitors can learn about traditional basket weaving, rice wine (sraa) making, and hear folk legends. Purchasing handmade crafts or local rice is a great way to support the community.
Dos and Don’ts for Tourists
| Dos | Don’ts |
|---|---|
| Pack out all your trash—no bins are available on-site. | Don’t carve trees, climb on vegetation, or disturb wildlife. |
| Dress modestly and ask permission before photographing locals. | Don’t use soap, shampoo, or detergent in the pools or stream. |
| Be courteous to the Bunong people and respect cultural beliefs. | Don’t pollute or alter the natural environment in any way. |
| Support local vendors by buying snacks, crafts, or drinks. | Don’t leave litter—carry all waste out with you. |
Safety Measures and Tips
Road Conditions: The final access road to the waterfall is rough and rocky, especially during the rainy season. Drive slowly—4×4 vehicles are recommended—and allow extra travel time. After heavy rain, the dirt track can become muddy or develop a washboard texture. If you’re riding a motorbike, wear a helmet and sturdy boots. It’s advisable to avoid the trip during severe storms.
Swimming Caution: There are no lifeguards at the site. Some sections of the falls have deep pools and strong currents, particularly at the base. Only swim in calm areas, and always supervise children closely. Never swim alone, as there have been incidents at other waterfalls in Cambodia.
Plan Ahead: Bring plenty of drinking water and snacks, as only light refreshments are available on-site. The return journey to town can take over an hour, so it’s wise to carry a basic first-aid kit in case of minor injuries like cuts or insect bites.
Weather & Clothing: The highland climate in Mondulkiri is cooler than in Phnom Penh. During the cool season (November to February), mornings and nights can get chilly—pack a sweater or light jacket. In the rainy season (June to October), wear quick-drying clothing and waterproof footwear. Use strong insect repellent to protect against mosquitoes.
Communications: Mobile signal is limited or unreliable around the waterfall. Be sure to download maps or directions beforehand for offline access.
Vehicle Preparedness: Refuel in Sen Monorom before departing, and check that your vehicle has a spare tire and necessary tools. The closest gas station is 1–2 hours away in town.
What to Pack
Basics: Bring bottled water (or a refillable water bottle), energy snacks, and some cash in small denominations.
Clothing: Wear lightweight, moisture-wicking clothes and bring sturdy hiking shoes or sport sandals with good grip. A wide-brim hat or cap is helpful for sun protection. During the monsoon season, pack a rain jacket or poncho. Don’t forget swimwear, a quick-dry towel, and a change of clothes if you plan to cool off in the pools.
Protection: Use high-SPF sunscreen and wear sunglasses. Bring strong insect repellent to protect against jungle ticks or leeches.
Essentials: Carry a basic first-aid kit (bandages, antiseptic, any personal medications), a phone power bank, and a flashlight or headlamp if you plan to return late. A camera or smartphone for photos is a must—pack it in a dry bag or ziplock pouch for protection.
Overnight (if camping): Bring a tent or hammock, a warm sleeping bag (as nights can be cool), a portable charger, toiletries, and extra layers. If you plan to camp in a designated area, also carry a fire-starting kit—but check in advance as open fires may be restricted.
Where to Stay
There are no formal hotels directly at the waterfall, but several accommodation options are available within convenient distance:
- Pichinda Village Guesthouse: A simple homestay experience in the nearby Bunong village of Pichinda. Rooms are rustic with basic amenities. Ideal for those seeking an authentic hill-tribe cultural experience.
- Eco-Lodges & Resorts: On the outskirts of Sen Monorom, several jungle lodges offer comfortable stays. Chuncheat House Eco-Lodge (approximately 10 km from town) provides bungalow and tent accommodations. KNN Resort Mondulkiri—one of the province’s more upscale choices—and Ou Ruessei Lodge near the Elephant Valley are known for scenic, nature-immersed settings. The Nature Lodge is also a popular eco-resort offering wooden cabins with forest views.
- Sen Monorom Town: About 40 km from Bou Sra, the town is the main base for visitors. It offers a range of budget guesthouses and mid-range hotels like Gibbon Lodge, Manel Guesthouse, and Mondulkiri Eco-Lodge. Staying here gives easy access to restaurants, markets, and transportation services. Boutique options like Mayura Hill Resort or Pidoma Camp provide a more upscale countryside retreat.
Food & Drink
At the waterfall itself, there is only a small stall selling drinks and packaged snacks. Do not expect full meals onsite. Many travelers bring picnic lunches or enjoy fresh fruit and cold water by the falls.
For proper meals, it’s best to return to Sen Monorom, the provincial town. Dining options there are modest but include both Khmer and some Western-style fare. The town’s largest restaurant, Chom Nor Mondulkiri, serves a mix of Cambodian and European dishes. A German-run café called Bananas, located just downstream of the town, is known for high-quality European-style meals.
Other options include local noodle shops and Khmer rice-plate stalls, many of which operate on a made-to-order basis. In recent years, a few cafés and pizzerias have opened, such as Mondulkiri Pizza, which is popular for Western comfort food, and Bamboo Café, which offers both Khmer and Asian cuisine.
It’s advisable to pre-order larger meals a few hours in advance—or at breakfast—since many kitchens shop for ingredients the same day they cook.
Additionally, support local vendors along the route. Roadside stands in the hills often sell grilled chicken, sticky rice, or fresh fruit, which make for tasty snacks during your journey to or from the falls.
Best Time to Visit
Bou Sra Waterfall is beautiful year-round, but conditions vary by season.
- Rainy season (May–October): Water volumes are highest and the falls are most spectacular. Expect lush greenery and powerful currents. However, trails and roads may be muddy or slippery, so only visit if you’re comfortable with off-road driving.
- Dry season (November–April): The waterfall’s flow becomes gentler and the pools clearer. Roads are easier to navigate and visibility is excellent.
- Late dry season (March–April): This is also the hottest period, so be sure to carry extra water and sun protection.
- Cool-season months (November–February): These bring mild weather and can even be chilly in the evenings, especially in the highlands—pack a light jacket. This is a popular time for Khmer families to visit for picnicking.
Summary: For dramatic, full-cascade photos, go during or just after the monsoon. For safer hiking and relaxed swimming in calm pools, the cool, dry months are ideal. Weekdays and early mornings are the best times to avoid crowds.
Local Insights
Mondulkiri province is home to Cambodia’s largest highland ethnic group, the Bunong (also spelled Phnong), who make up 80–90% of the local population. The Bunong are traditionally animist farmers with a profound spiritual connection to nature. They believe that spirits dwell in ancient trees, springs, and waterfalls, and Bou Sra itself is regarded as a sacred site. Elders in the community have long performed rituals here to honor water and forest spirits.
A modern celebration worth experiencing is “Bonn Phum on the Move”, often held in November in Sen Monorom. This festival showcases Mondulkiri’s ecotourism appeal and Bunong heritage through elephant tributes, indigenous music, and even traditional ceremonies such as buffalo sacrifices that honor spiritual customs. Another notable event is Indigenous Peoples’ Day in April, where Bunong arts, crafts, and performances are highlighted.
While visiting, it is important to respect Bunong traditions. A warm greeting, such as a “hello” or a slight bow (“somtos”), is always appreciated. Many locals sell handmade crafts, snacks like cassava chips, or traditional rice wine (sraa)—purchasing these supports the local economy. If you plan to enter certain areas or observe rituals, it’s respectful to first seek the blessing of a local elder.
Always be mindful of Bunong beliefs—avoid cutting trees, disturbing sacred spots, or polluting the water. Respecting these customs helps preserve both the cultural and natural integrity of Bou Sra for generations to come.
Nearby Attractions from Bou Sra Waterfall
| Place | Distance from Bou Sra | Description |
|---|---|---|
| Sen Monorom Town | ~43 km | The provincial capital, serving as the main base for travelers. Offers guesthouses, restaurants, and local markets. |
| Elephant Valley Project | ~30 km | A renowned elephant sanctuary promoting ethical tourism. Visitors can observe elephants in their natural habitat—no riding. |
| Monorom Waterfall | ~5 km from Sen Monorom | A smaller but scenic waterfall popular for swimming and picnics. A great stop if heading back toward town. |
| Phnom Doh Kromom (Hill of the Sacred Woman) | ~3 km from Sen Monorom | A spiritual hill offering panoramic views of the region. Known for its shrine and Bunong cultural significance. |
| Pu Long Village | ~25 km | A traditional Bunong village where visitors can learn about indigenous lifestyles, crafts, and rice wine brewing. |
| Coffee Plantations | Various locations | The highlands are ideal for Arabica coffee. Some farms allow visits, tastings, and guided tours. Try local coffee in Sen Monorom cafés. |
| Pichinda Village | ~1 km from Bou Sra | A Bunong settlement near the waterfall where you can stay at homestays and engage with local culture. |
| Mayura Zipline Adventure | Near Bou Sra | A treetop zipline experience that flies over parts of the Bou Sra gorge – a thrilling way to view the falls from above. |
