The Tibetan Plateau is located in Central Asia north of the Himalayas. It covers an area of 2.5 million square kilometers. It is dominated by strongly undulating loess rocks and mountain ranges cut by deep valleys and basins. The Tibetan Plateau is a place where many rivers have their sources, including the Yangtze, Indus and Mekong. There is an extremely dry, continental climate. People inhabiting the Tibetan Plateau, descendants of traveling tribes, make their living primarily from grazing animals.