Niger deaths: Why migrants flee over the Sahara
31 October 2013 Last updated at 19:18 GMT
The bodies of 92 people who died of thirst attempting to cross the Sahara desert have been found in Niger.
The group, mainly made up of women and children, were stranded after their vehicle broke down, leaving them to walk 20km in the scorching sun to reach a well.
It is thought the group were migrants trying to reach neighbouring Algeria.
The BBC's Karin Giannone explains why this route is so popular with migrants.