Paul and Matthieu walking with donkey up the snowy mountain from Afghanistan to Pakistan.

A Historic Journey Proceeds Across the Roof of the World

As he retraces our ancestors’ global migration on foot, the author sees Afghanistan's peaceful villages—and reminders that tensions persist.

Contending with snow, cold, and a tired donkey, Paul Salopek takes his last steps in Afghanistan’s Wakhan corridor as he and photographer Matthieu Paley navigate the Irshad Pass into Pakistan. The ascent was supposed to take three hours, but it ended up taking nine. At the top of the pass, the clouds cleared as the sun set. “I was struck, despite exhaustion, by the light,” Salopek says. “It was the sort of light you associate with birth—light you are born into."
This story appears in the September 2018 issue of National Geographic magazine.
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