Extending for 18 miles, the crack across the Pine Island Glacier was 260 feet wide and 195 feet deep. Eventually, the crack grew across the ice until it calved a giant iceberg that measured more than 250 square miles.
This image, from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft, was captured on November 13, 2011.
July 11, 2013 5:18 PM PDT
Photo by: NASA/GSFC/METI/ERSDAC/JAROS and U.S./Japan ASTER Science Team