[1][2] The ecoregion stretches approximately 1,000 km on alignment from southwest-to-northeast, between the Kolyma Mountains on the west, the Bering Sea coast to the east, and Kamchatka peninsula to the south.

Elsewhere the ground cover is grasses, heaths, and members of the families Asteraceae, Ranunculaceae, and Rosaceae.

Species diversity is relatively low due to the harsh climate and the isolation of the area since glacial times.

Large mammals the include the East Siberian brown bear, the Anadyr fox, and some bighorn sheep in the highlands.

[4] There is at least one significant nationally protected area in this ecoregion, the Koryak Nature Reserve, on the northeastern region of Kamchatka, stretching from mountains to the coast.