[1] The mountains are mainly composed of volcanic rock, sandstone and shale, as well as chalk, and andesite-basalt, with granites, porphyry and gabbro-granodiorite intrusions.

[2] The Badzhal Range consists of a system of separate ridges of moderate alpine relief with a total length of about 220 kilometres (140 mi).

In its flanks the range is bound by the Amur to the NW and its tributary Amgun river valleys to the SE.

[3] The sources of the Gorin River are located in the Dayana Ridge subrange.

[3] The slopes of the range are covered deciduous forests, followed by taiga with a predominance of fir and Siberian spruce at higher elevations.