Glaciologist Dr Jason Box adjusts his remote time lapse cameras high on the cliffs above Petermann Glacier. He points the camera directly at a crack which has appeared in the ice far below. The camera will automatically make images once every minute, to produce time lapse films of the ice breakup. These provide a unique and revealing insight into how glacial ice breaks and drifts to sea. The installation of several time lapse cameras on Petermann and other glaciers in north Greenland is a joint initiative between Greenpeace and Extreme Ice Survey (EIS).