Land of the shadow
Standing on the edge of Mathare Valley (the oldest slum in Nairobi), you can look down on a vast area 2 two kilometres in length, crammed with tiny shacks.
They stand back to back, each measuring about 8ft by 6ft and usually housing over 10 people. The slum is home to over 500,000 people. Nairobi river flows through the heart of the slum.