Sindh is in the western corner of South Asia, bordering the Iranian plateau in the west. Geographically it is the third largest province of Pakistan, stretching about from north to south and (extreme) or (average) from east to west, with an area of of Pakistani territory. Sindh is bounded by the Thar Desert to the east, the Kirthar Mountains to the west and the Arabian Sea and Rann of Kutch to the south. In the centre is a fertile plain along the Indus River.