From Wikipedia; please see the article if you're interested in further information.


Ural Mountains
The Ural Mountains are the most famous of Russia's mountain ranges because they form the natural boundary between Europe and Asia; the range extends about 2,100 kilometers from the Arctic Ocean to the northern border of Kazakhstan. In terms of elevation, however, the Urals are far from impressive. They do not serve as a formidable natural barrier. Several low passes provide major transportation routes through the Urals eastward from Europe. The highest peak, Mount Narodnaya, is only 1,894 meters. Yet, while they are not imposing to the eye, the Urals do contain valuable deposits of minerals


Sayan and Stanovoy Mountains
In the mountain system west of Lake Baikal in south-central Siberia, the highest elevations are 3,300 meters in the Western Sayan, 3,200 meters in the Eastern Sayan, and 4,500 meters at Belukha Mountain in the Altay Mountains. The Eastern Sayan reach nearly to the southern shore of Lake Baikal; at the lake, there is an elevation difference of more than 4,500 meters between the nearest mountain, 2,840 meters high, and the deepest part of the lake, which is 1,700 meters below sea level. The mountain systems east of Lake Baikal are lower, forming a complex of minor ranges and valleys that reaches from the lake to the Pacific coast. The maximum height of the Stanovoy Range, which runs west to east from northern Lake Baikal to the Sea of Okhotsk, is 2,550 meters. To the south of that range is southeastern Siberia, whose mountains reach 800 meters. Across the Strait of Tartary from that region is Sakhalin Island, where the highest elevation is about 1,700 meters.


Caucasus Mountains
Truly alpine terrain appears in the southern mountain ranges. Between the Black and Caspian seas, the Caucasus Mountains rise to impressive heights, forming a boundary between Europe and Asia. One of the peaks, Mount Elbrus, is the highest point in Europe, at 5,642 meters. The geological structure of the Caucasus extends to the northwest as the Crimean and Carpathian Mountains and southeastward into Central Asia as the Tian Shan and Pamirs. The Caucasus Mountains create an imposing natural barrier between Russia and its neighbors to the southwest, Georgia and Azerbaijan.


Northeast Siberia and Kamchatka
Northeastern Siberia, north of the Stanovoy Range, is an extremely mountainous region. The long Kamchatka Peninsula, which juts southward into the Sea of Okhotsk, includes many volcanic peaks, some of which still are active. The highest is the 4,750-meter Klyuchevskaya Sopka, the highest point in the Russian Far East. The volcanic chain continues from the southern tip of Kamchatka southward through the Kuril Islands chain and into Japan. Kamchatka also is one of Russia's two centers of seismic activity (the other is the Caucasus). In 1995, a major earthquake largely destroyed the oil-processing town of Neftegorsk. Also, located in this region is the very large Beyenchime-Salaatin crater