Which two continents are part of one huge land mass, separated by a chain of mountains?

Europe and Asia parts of one huge land mass and they are separated by a chain of mountains. Asia and Europe also share one mass of land. They are also joined in a one large land mass. Europe is a continent and it is the western part of Eurasia. Asia is also a continent, not only a continent but the largest and most populous continent. They are separated by the Ural Mountains in Russia and the Bosporus Strait in Turkey.