The river begins in the western flank of the Chersky Range at an elevation of . It heads roughly north and northwest across a wide river valley where taiga and forest tundra predominate. Finally, after flowing across the western end of the Kisilyakh Range, it joins river Yana from the right about to the north of Batagay. The river is also known as Borong (Russian: Боронг) in a section of its upper course.