In 2002 the photographer Lisa Ross was taken to the edge of the Taklamakan Desert in western China by her driver. She did not know why, but there was a path in the sand, and so she followed it, over the dunes: Colours began to reveal themselves. In the distance I could see what looked like wooden cribs or rafts, cresting on dry land, animated by coloured flags beating in the wind. As I neared the markers, there seemed to be animals with arms and legs stuck atop tall wooden posts.