"There’s a giant landfill site near Maputo, Mozambique’s capital city, that covers 42 acres and rises to 15 metres in height. Young men roam it hoping to find things that are either valuable or can be recycled. These people play an important role in the local economy but they are marginalised by Mozambican society. When I started thinking about photographing the tip roamers, people warned me it would be dangerous: they are “uncivilised”, they said, they would steal my camera, attack me, even kill me."