Just about 18km from the coast, Bach Ma National Park is about 1,450m above sea level in a transition zone of the Northern and Southern climate, so the climate is cool like Sapa, Tam Dao, Da Lat, etc.
The national park was extended in 2008, stretching from the coast to the Annamite mountain range at the Lao border. Bach Ma National Park is home to more than 1400 species of plants, most of them are rare ferns and orchids, representing one-fifth of the Vietnamese flora, and 132 kinds of mammals, three of which are rare to be seen since the 1990s: the sao la, Truong Son muntjac and the giant muntjac. Nine species of primates survive here, including a small number of the rare red-shanked Douc langur. As most of them are nocturnal mammals, sightings demand a great deal of effort and patience. The park is also an ideal spot for bird-watching, but you need to wake up at dawn to get a glimpse of some of fabulous crested argus pheasants.
Small limpid brooks and picturesque waterfalls are scattered around Bach Ma Mountain. At the 16th kilometer on Cau Hai – Bach Ma road, turning left and take a 20-minute walk, you encounter Do Quyen waterfall of 400m high and 20m wide, suddenly emerging as if it were suspended in the sky. In the summertime, rhododendron flowers are blooming on each side of the fall, creating two large flower carpets. Nearby there is a waterfall which looks like a spotless white curtain swayed by the wind.
Bach Ma National Park is the wettest spot in Vietnam. The heaviest rainfall falls in October and November. The best time to visit Bach Ma is from February to September, particularly between March and June.