If you hurry nowhere but you want to save money, the best way to get to Mongolia is the backpackers-wide famous bus route from Ulan-Ude to Ulaanbaatar.
In German language
The Trans-Siberian Railway is a network of railways connecting Moscow with the Russian Far East and the Sea of Japan. It is the longest railway line in the world.
The Urals are a geographical region located around the Ural Mountains, between the East European and West Siberian plains