A young, unmarried girl stands amid a herd of cattle outside Bor, the capital of Jonglei State. Cattle carry significant social, economic, and cultural importance for South Sudan's pastoralist ethnic groups, which use cows for payment of dowry.

A young, unmarried girl stands amid a herd of cattle outside Bor, the capital of Jonglei State.  Cattle carry significant social, economic, and cultural importance for South Sudan's pastoralist ethnic groups, which use cows for payment of dowry - a key driver of child marriage. Bor Jonglei State, February 2013. 
© 2013 Brent Stirton/Reportage for Human Rights Watch