A motorcar runs on the Badain Jaran Desert in Alashan of north China's Inner Mongolia autonomous region, June 19, 2012. The Badian Jaran Desert is 47,000 square km and sparsely populated. It is famous for having the tallest stationary sand dunes in the world. Some dunes reach a height of 500 meters. But it also features spring-fed lakes that lie between the dunes. [Photo/Xinhua]