Polar explorer and expert in glacier travel Eric Philips looks down into one of the 'cracks' in the Petermann glacier where it is crossed by a ravine, this crack is the one between blocks 'B' and 'C'. Small boulders and debris have fallen into the crack. Also visible is a thinner open crack, free of debris and snow, suggesting recent movement. It is anticipated by scientists studying the glacier that as this crack continues to actively widen, that a piece will break off- an ice island- will float away into the Petermann fjord and beyond to the sea. The glaciologists on site have named the vulnerable pieces 'A' 'B' and 'C'.