The Extreme North or the Far North is a large part of Russia located mainly north of the Arctic Circle and boasting enormous mineral and natural resources. Its total area is about 5,500,000 square kilometres (2,100,000 mi2), comprising about one-third of Russia's total area. Formally, the regions of the Extreme North comprise the whole of Chukotka Autonomous Okrug, Kamchatka Krai, Magadan Oblast, Murmansk Oblast and Sakha, as well as certain parts and cities of Arkhangelsk Oblast, Irkutsk Oblast, Khabarovsk Krai, Komi Republic, Krasnoyarsk Krai, Republic of Karelia, Sakhalin Oblast, Tuva, Tyumen Oblast, as well as all islands of the Arctic Ocean, its seas, the Bering Sea, and the Sea of Okhotsk.