Bou Sra Waterfall
Mondulkiri's great waterfall, dropping in three tiers into forest on the eastern edge of the plateau.
Updated 21 October 2026
Bou Sra is the best-known waterfall in Cambodia, on the Preak Chhbok river near the Vietnamese border, falling in three tiers, the two main drops around ten and twenty-five metres, into a forested gorge. Viewing platforms look at the upper fall and a path with steps descends toward the lower one, and there is a zip line across the gorge. The site is on Bunong land and the waterfall has significance in their tradition. Volume varies enormously: at the end of the rains it is a thundering curtain, while by March and April it thins considerably. The drive out from Sen Monorom passes through rubber plantations that have replaced a great deal of the forest that used to cover this route.
What you'll find
- The tiers - the stepped falls in a forested gorge.
- Viewing platforms - the built overlooks above the drops.
- The descent path - steps down toward the lower fall.
- Bunong land - the community whose territory the falls sit in.
When to go
September to December, after the rains, when the volume is at its greatest. By March and April the fall is much reduced. The road is easiest in the dry months, which is the usual trade-off.
What to expect
Flow drops a lot late in the dry season. The site has been developed with platforms, stalls and a zip line, which affects the atmosphere. The road out is rough in places. Rubber plantations along the way are a stark sight.
Nearby
Sen Monorom lies west; the Vietnamese border is east.
Key facts
Source: Wikidata, item Q4930565, read on 18 October 2026.
What to pack for Bou Sra Waterfall
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
- Daypack with rain cover - 20-30 litres holds water, snacks, layers and a first-aid kit. Find on Amazon
- Offline maps + a power bank - Download the trail before you lose signal; carry backup charge. Find on Amazon
Some links on this page are Amazon affiliate links - if you buy through them we may earn a small commission at no extra cost to you.
All packing kitsPlan your trip
Where to start if Bou Sra Waterfall is going on the list.
Booking links on this page are affiliate links - if you book through them we may earn a small commission at no extra cost to you. It never changes what we write about a place.
Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.


