Petermann Glacier, one of Greenland's largest and most northerly glaciers. Two of the cracks in the glacier are visible at the top of the frame. This is the view that is being recorded by two remote cameras mounted on the cliff top by glaciologist Dr Jason Box. The cliffs at 980 metres high (3,000 feet) provide an ideal vantage point to monitor the glacier. A team of scientists assisted by experts in ice logistics, intend to document the glacier's ongoing disintegration. Recent satellite images show that an expanse larger than New York's Manhattan island is ready to break off from Petermann Glacier.