The Pekulney Range is a southern prolongation of the
Chukotka Mountains, part of the
East Siberian System of ranges. This mountain chain runs in a roughly north/south direction for about , extending both north and south of the
Arctic Circle. It is limited to the west by the
Anadyr Highlands with the
Osinov Range, and the
Belaya River with its tributary Bolshaya Osinovaya. To the east the range is bound by the valley of the
Tanyurer River. Both the rivers limiting the range to the west and to the east are flowing southwards. The highest point of the Pekulney Range is high
Kolyuchaya peak. At its southern end the range reaches the
Anadyr Lowland. There are four
cirque glaciers on the mountains of the range, as well as some perennial
snow fields, with a total area not exceeding . ==Flora==