Russia is the largest country in the world, spanning Europe and Asia. It has significant geographic diversity, containing mountains such as the Ural Mountains that divide European and Asian Russia, and the Caucasus Mountains along the border with Europe and Asia. Russia also contains vast plains, such as the Northern Russian Plain where most of the population lives, and the West Siberian Plain, one of the largest flatland areas in the world. Russia has an abundance of natural resources, including fossil fuels, minerals, forests, and freshwater, though some resources are difficult to access due to the country's size and climate.