When five-year-old Zainullah tumbled down a 70m-deep well in Afghanistan, rescuers were unable to reach him. So, 11-year-old Hazrat was lowered down to attach a rope to the little boy. The attempt to save the child was successful - but it highlights the risks children face in a country where drought is causing people to dig ever deeper in their search for water. Tap the link in @BBCNews’s bio to read more about the rescue operations. #Afghanistan #BBCNews