Yakutsk, ya-kootsk', the capital of the Siberian province of that name. It is situated near the central point in the course of the Lena at about sixty-two degrees of north latitude. The name is derived from the native inhabitants, Mongolian people known as Yakuts. During the short summer season Yakutsk is a trading town. The exports are chiefly gold, furs, and the ivory of the mammoth. The population is about 5,000. See SIBERIA; MAMMOTH.