The Selennyakh Range extends from NNW to SSE for almost north of the northern end of the Moma Range and east of the Khadaranya Range. It is parallel to the latter and separated from it by the Moma-Selennyakh Depression, a wide intermontane basin, where the river Selennyakh flows and that continues southeastwards along the western side of the Moma Range. The Aby Lowland lies to the east and to the north the Yana-Indigirka Lowland. To the northeast it connects with the Kyun-Tas, at the western end of the Polousny Range, and to the northwest with the far north of the Chersky mountain system.