Dong Ap Bia (, Ap Bia Mountain) is a mountain on the
Laotian border of
South Vietnam in
Thừa Thiên–Huế Province. Rising from the floor of the western
A Shau Valley, it is a looming, solitary
massif, unconnected to the ridges of the surrounding Annamite range. It dominates the northern valley, towering some 937 metres above
sea level. Snaking down from its highest peak are a series of ridges and fingers, one of the largest extending southeast to a height of 900 metres, another reaching south to a 916-metre peak. The entire mountain is a rugged, uninviting wilderness blanketed in double- and triple-canopy jungle, dense thickets of
bamboo, and waist-high
elephant grass. Local
Montagnard tribesmen call Ap Bia "the mountain of the crouching beast."