Kolyma Mountains

The Kolyma Mountains or Kolyma Upland () is a mountain range in northeastern Siberia, lying mostly within the Magadan Oblast, along the shores of the Sea of Okhotsk in the Kolyma region. The range's highest point is Mount Nevskaya (гора Невская) in the Omsukchan Range at .
Geography.
The Kolyma Mountains stretch on a NW-SW alignment and consists of a series of plateaus and ridges punctuated by granite peaks that typically range between . The Yukaghir Highlands rise to the northwest and the Anadyr Highlands to the north and northeast.
Subranges.
Besides the Omsukchan Range, the system of the Kolyma Mountains comprises a number of subranges. Most are located in Magadan Oblast:
The northernmost ranges are located in the Chukotka Autonomous Okrug
Hydrography.
Many right tributaries of the Kolyma River have their sources in the northern and northwestern slopes of the Kolima Highlands, including the Bakhapcha, Buyunda, Balygychan, Sugoy, Korkodon —with its tributary Bulun, and the Omolon —with its tributaries Molongda, Oloy, Kedon and Kegali. 
The rivers originating in the southern and southeastern slopes of the mountain area flow into the Sea of Okhotsk and are shorter: Arman, Ola, Yana, Yama, Taui, Gizhiga, Paren and Penzhina.