Syria's makeshift oil refineries: 'It is like hell' – video

As a result of the rush to make quick money, open-air refineries have been set up in al-Raqqa province. Crude is stored in ditches and heated in metal tanks by wood fires, shrouding the region with plumes of black smoke, and exposing the local population to the dangers of the thick smog and the frequent explosions at the improvised plants