Khalkh
The Khalkh River rises in the Greater Khingan and winds west across the eastern steppe towards Lake Buir. Its lower course divides: one branch enters the lake, while another reaches the Orshuun, which carries water north towards Lake Hulun. Reeds and marshes grow along the floodplain, providing nesting grounds for waterbirds. The river brings mountain water into a landscape of grassland, shallow lakes and broad open horizons.