Watch Free Online HD Moviesjoy. Now Siberia is considered to be the heart of Russia. However, many centuries ago it was just another unexplored territory, full of mysteries and danger. Our documentary series explores the most interesting of them. The episode about the discovery of Siberia is ready-made. Another 3 episodes will tell the story of surviving in severe frost, explore the deepest Siberian caves and cover the story of gold-mining in Siberia.