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The northern frontiers of India are defined largely by the Himalayan mountain range, where the country borders China, Bhutan, and Nepal. Its western border with Pakistan lies in the Punjab Plain and the Thar Desert.
The central Himalayan Mountains are situated in Nepal, while the eastern mountains extend to the borders of Bhutan and Sikkim. Nanga Parbat massif is the western corner pillar of the Karakurm. It is an isolated range of peaks just springing up from nothing, and is surrounded by the rivers Indus and Astore.