This is the economy in action under a bridge, as I discovered by chance. This is an efficient ironing business employing people of all ages. They work hard for a few pennies. A single scene can explain more about reality than a whole book.
This is hard work from sunrise onwards. The bridge provides shade from the harsh African heat. The laundered clothes come from the left and next they are ironed and folded in the middle to be returned to their owners, neatly packed, on the right. A creative assembly line! (I learned that they put glowing coals in their irons.)