Pine Island Glacier Crack Slideshow

Pine Island Glacier, October 2, 2011.
Credit: DLR.
Pine Island Glacier, October 13, 2011.
Credit: DLR.
Pine Island Glacier, April 13, 2012.
Credit: DLR.
Pine Island Glacier, May 11, 2012.
Credit: DLR.
Pine Island Glacier, July 2, 2013
Credit: DLR.
Pine Island Glacier, July 8, 2013
Credit: DLR.