Zijlmans and Jongenelis photographed ten subjects (plus tables, port-a-pottys, and three potted conifers) ten times for ten consecutive afternoons during a hot summer month in 2006, each day moving the action closer to the horizon. “When we started the project, we didn’t expect such heavy shadows,” says Jongenelis. “To get the same light in each picture, we made a simple sundial. When the shadow hit one rock, we started, and when it hit another, we stopped.”