Where it is
Chrey Thom lies in Sen Monorom district, roughly forty-three kilometres from the provincial town, in the rolling highland country that makes Mondulkiri feel unlike anywhere else in Cambodia.
The falls take their name from a large chrey tree — a species of fig — standing beside the water, and the surrounding land is planted with srolao trees.
What you find there
The waterfall changes shape with the season. In the dry months it runs narrow and tall, around fifteen metres high and a couple of metres across; in the rains it broadens dramatically to perhaps eight metres wide while dropping a little lower.
It is a place for a half-day rather than a quick photograph: picnicking, walking in the surrounding forest, and swimming in the pool below when the flow allows.
Indigenous Bunong villages nearby sell handwoven textiles and baskets, and visiting them is part of what most people come for.
Getting there and when to go
Access is by red laterite track from Sen Monorom. Unlike Bou Sra, which becomes hard to reach when the rains are heavy, Chrey Thom stays accessible year-round, which makes it the dependable choice in the wet season.
The falls are at their most powerful from October to December, just after the rains. The dry months from January give easier roads and better swimming.