Topic summary
Salt trade

Extracted from the Wikipedia article Salt road.
Roads
Before the People's Republic of China annexed Tibet and closed the borders in the 1950s, salt trade between Nepal and Tibet crossed passes through the Himalayas such as the gorges of the upper Karnali and Gandaki rivers. Caravans of pack animals brought rice up from Nepal's Terai and lower hills in exchange for salt from dry lakes on the Tibetan Plateau.