Southern Asia is more mountainous than northern Asia; the majority of the latter is dominated by the relatively flat tundra of Russia, with only the Ural Mountains rising in the far western area of the continent. In contrast, southern Asia features five major mountain ranges.
The mountain chains that are definitively part of southern Asia are the Kunlun, Himalayan, Zagros and Ghat ranges. Typically, the Ghats are divided into eastern and western ranges, running up either coast of India. The Himalayas, as the tallest mountains in the world, divide India from Nepal, Tibet and China; the Kunlun ranges, as one of the longest in Asia, runs north and parallel. Iran and Iraq feature the Zagros range, that terminate at the Straits of Hormuz.