The Russian Federation stretches across a large extent of the north of the super-continent of Eurasia. Because of its size, Russia displays both monotony and diversity. As with its topography, its climates, vegetation, and soils span vast distances. From north to south the East European Plain is clad sequentially in tundra, coniferous forest (taiga), mixed and broad-leaf forests, grassland (steppe), and semi-desert (fringing the Caspian Sea) as the changes in vegetation reflect the changes in climate. Siberia supports a similar sequence but is taiga. The country contains 23 World Heritage Sites and 40 UNESCO Biosphere reserves.
The two widest separated points in Russia are about 8,000 km (5,000 mi) apart along a geodesic line. These points are: the boundary with Poland on a 60 km long (40-mi long) spit of land separating the Gulf of Gdańsk from the Vistula Lagoon; and the farthest southeast of the Kuril Islands, a few miles off Hokkaidō Island, Japan. The points which are furthest separated in longitude are 6,600 km (4,100 mi) apart along a geodesic. These points are: in the West, the same spit; in the East, the Big Diomede Island (Ostrov Ratmanova). The Russian Federation spans 11 time zone
Russia has the world's largest forest reserves and is known as "the lungs of Europe", second only to the Amazon Rainforest in the amount of carbon dioxide it absorbs. It provides a huge amount of oxygen for not just Europe, but the world. With access to three of the world's oceans — the Atlantic, Arctic and Pacific — Russian fishing fleets are a major contributor to the world's fish supply. The Caspian is the source of what is considered the finest caviar in the world.
Most of Russia consists of vast stretches of plains that are predominantly steppe to the south and heavily forested to the north, with tundra along the northern coast. Mountain ranges are found along the southern borders, such as the Caucasus (containing Mount Elbrus, Russia's and Europe's highest point at 5,642 m / 18,511 ft) and the Altai, and in the eastern parts, such as the Verkhoyansk Range or the volcanoes on Kamchatka. The Ural Mountains, rich in mineral resources, form a north-south range that divides Europe and Asia. Russia possesses 10% of the world's arable land
Russia has an extensive coastline of over 37,000 kilometers (23,000 mi) along the Arctic and Pacific Oceans, as well as the Baltic Sea, Sea of Azov, Black and Caspian seas. The Barents Sea, White Sea, Kara Sea, Laptev Sea, East Siberian Sea, Chukchi Sea, Bering Sea, Sea of Okhotsk and the Sea of Japan are linked to Russia. Major islands and archipelagos include Novaya Zemlya, the Franz Josef Land, the Severnaya Zemlya, the New Siberian Islands, Wrangel Island, the Kuril Islands and Sakhalin. The Diomede Islands (one controlled by Russia, the other by the United States) are just three kilometers (1.9 mi) apart, and Kunashir Island is about twenty kilometers (12 mi) from Hokkaidō.
Russia has thousands of rivers and inland bodies of water, providing it with one of the world's largest surface water resources. The largest and most prominent of Russia's bodies of fresh water is Lake Baikal, the world's deepest, purest, most ancient and most capacious freshwater lake. Lake Baikal alone contains over one fifth of the world's fresh surface water. Other major lakes include Lake Ladoga and Lake Onega, two largest lakes in Europe. Of Russia's 100,000 rivers, The Volga is the most famous—not only because it is the longest river in Europe but also because of its major role in Russian history. Russia has a wide natural resource base unmatched by any other country, including major deposits of petroleum, natural gas, coal, timber and mineral resources.