Steve McCurry is probably most famous for his photograph of the young afghan girl.  You can see why.  Its beautiful.

Sharbat Gula شربت ګله is of Pashtun ethnicity.  She was forced to leave her home in Afghanistan during the Soviet war for a refugee camp in Pakistan where at about age 12 she was photographed by McCurry.  In 2002 a team from the National Geographic managed to track Gula down, and Steve McCurry photographed her again; then about age 30 and having returned to her native land of Afghanistan.