"The nomads and semi-nomads, generally called ''Kuchi'' in Afghanistan, mostly keep sheep and goats. The produce of the animals (meat, dairy products, hair and wool) is exchanged or sold in order to purchase grain, vegetables, fruit and other products of settled life. In this way an extensive network of exchange has developed along the main routes annually followed by the nomads. The merchant ''Powindah'' (Ghilji) (Ghilzai ) Pashtuns used to move annually from the Afghanistan mountains to the valley of the Indus. These long-distance migrations were stopped in the early 1960s when the border with Afghanistan and Pakistan were closed, but many Kuchis are still allowed to cross as border officials recognize the Kuchi migrations which occur seasonally and allow them to pass even in times of political turmoil. In recent decades, migrations inside Afghanistan continue, although trucks are now often being used to transport livestock and family from one place to another."〔Willem Vogelsang (2002), p. 15.〕