Kaliningrad Oblast, Russia's westernmost part along the Baltic Sea, is about  apart from its easternmost part, Big Diomede Island in the Bering Strait. Russia has nine major mountain ranges, and they are found along the southern regions, which share a significant portion of the Caucasus Mountains (containing Mount Elbrus, which at  is the highest peak in Russia and Europe); the Altai and Sayan Mountains in Siberia; and in the East Siberian Mountains and the Kamchatka Peninsula in the Russian Far East (containing Klyuchevskaya Sopka, which at  is the highest active volcano in Eurasia). The Ural Mountains, running north to south through the country's west, are rich in mineral resources, and form the traditional boundary between Europe and Asia.