COLD CASE: Breakup of Pine Island Glacier (VIDEO) Ohio State University This video is under embargo. Please login to access this video. Caption In 2015, a 225-square-mile iceberg broke off of the Pine Island Glacier in Antarctica, and researchers at The Ohio State University have discovered that the event was no ordinary breakup. The culprit: a deep subsurface rift that cracked through the ice nearly 20 miles inland -- a sign that the largest ice reserve in the world may be melting sooner rather than later. Credit Series of Sentinel-1A satellite images courtesy of Seongsu Jeong, The Ohio State University. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.