The actual shooting of the cover was rather dramatic in itself. The man diving into the lake, lake Mono in California, was a yoga expert who performed a handstand in a metal bucket frame. He held his breath for a long time so that the ripples caused by the commotion of getting of getting into the diving position in the first place would die more or less away. He only had to do it 60 times, but this is art innit? - Roger Waters from the Shine On boxset book.