Man buried '22 migrants in desert with his own hands'published at 11:14 British Summer Time 2 August 2017
Most of the refugees and migrants from sub-Saharan Africa who cross the Mediterranean to reach Europe have to travel for days in the Sahara desert on their way to Libya.
Many die on the journey in the desert.
Italian journalist Giacomo Zandonini has just returned from Niger where he spent a month meeting people walking through the Sahara.
He spoke to BBC Newsday: