North—Northeastern Siberia

North—Northeastern Siberia covers nearly half of Russian territory. This is the least populated and least developed area. The Ob, Yenisei, and Lena rivers flow to the Arctic. Through the use of atomic-powered icebreakers, the Northern Sea Route has gained increasing economic importance. The Kolyma gold fields are the principal source of Russian gold, and industrial diamonds are mined in the Sakha Republic, notably at Mirny. Fur trapping and hunting are the chief activities in the taiga and tundra regions.

Source

 * Washington Post, https://www.washingtonpost.com/wp-srv/world/countries/russia.html