This image of Sharbat Gula, a young Afghan girl living in a refugee camp along the border of Pakistan, has become the most famous cover in National Geographic's 125-year history.
In one refugee tent being used as a makeshift school, Steve McCurry photographed Gula with a haunted look in her eyes; her village had been bombed, her relatives killed, and she had trekked through the mountains for weeks before arriving at the camp.