Sibir, often referred to as Siberia, is a vast region in Russia that stretches from the Ural Mountains to the Pacific Ocean. It covers about 5 million square miles, making up nearly 77% of Russia's land area. The region is known for its harsh climate, with long, cold winters and short summers. It is rich in natural resources, including minerals, forests, and oil. Siberia is home to diverse wildlife and several indigenous peoples, such as the Yakuts and Buryats. Major cities in the region include Novosibirsk, the largest city in Siberia, and Irkutsk, which is near Lake Baikal, the world's deepest freshwater lake.