An old woman sits on a wooden bench surrounded by onlookers. A makeshift structure with a thatch roof offers some shelter from the glare of the sun. The woman is silent as strangers - some black, some white - come and sit beside her. A camera clicks and a few coins are placed on a chipped enamel plate at the woman's feet. Another person approaches and the action is repeated. I notice a chameleon creeping stealthily along the whitewashed wall behind the woman, and wonder if it will be visible in the photograph which will be shown back home in Dallas or Dublin or Dakar.